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12780124604490 = 2351184293597127
BaseRepresentation
bin1011100111111001101011…
…0010011000100001001010
31200020202201212011010202110
42321332122302120201022
53133342143344320430
643103035211443150
72456222254520025
oct271763262304112
950222655133673
1012780124604490
1140880251867a1
121524a59a564b6
13719211a3b2a9
143227c04161bc
151726913ab7b0
hexb9f9ac9884a

12780124604490 has 32 divisors (see below), whose sum is σ = 30672566570880. Its totient is φ = 3408003503424.

The previous prime is 12780124604483. The next prime is 12780124604497. The reversal of 12780124604490 is 9440642108721.

12780124604490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12780124604483) and next prime (12780124604497).

It is not an unprimeable number, because it can be changed into a prime (12780124604497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1754307 + ... + 5351433.

It is an arithmetic number, because the mean of its divisors is an integer number (958517705340).

Almost surely, 212780124604490 is an apocalyptic number.

12780124604490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12780124604490 is an abundant number, since it is smaller than the sum of its proper divisors (17892441966390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12780124604490 is a wasteful number, since it uses less digits than its factorization.

12780124604490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715566.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 12780124604490 in words is "twelve trillion, seven hundred eighty billion, one hundred twenty-four million, six hundred four thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 118429 236858 355287 592145 710574 1184290 1776435 3552870 3597127 7194254 10791381 17985635 21582762 35971270 53956905 107913810 426004153483 852008306966 1278012460449 2130020767415 2556024920898 4260041534830 6390062302245 12780124604490