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12788096450 = 252255761929
BaseRepresentation
bin10111110100011101…
…01101110111000010
31020000020001121102212
423322032231313002
5202142223041300
65512541142122
7631621012013
oct137216556702
936006047385
1012788096450
115472602158
12258a85a942
13128a50a59c
1489456900a
154eca45935
hex2fa3addc2

12788096450 has 12 divisors (see below), whose sum is σ = 23785859490. Its totient is φ = 5115238560.

The previous prime is 12788096441. The next prime is 12788096459. The reversal of 12788096450 is 5469088721.

It is an interprime number because it is at equal distance from previous prime (12788096441) and next prime (12788096459).

It can be written as a sum of positive squares in 3 ways, for example, as 9791300401 + 2996796049 = 98951^2 + 54743^2 .

It is a super-3 number, since 3×127880964503 (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 255761929 = 12788096450 / (1 + 2 + 7 + 8 + 8 + 0 + 9 + 6 + 4 + 5 + 0).

It is not an unprimeable number, because it can be changed into a prime (12788096459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127880915 + ... + 127881014.

Almost surely, 212788096450 is an apocalyptic number.

12788096450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12788096450 is a deficient number, since it is larger than the sum of its proper divisors (10997763040).

12788096450 is a wasteful number, since it uses less digits than its factorization.

12788096450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255761941 (or 255761936 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 12788096450 in words is "twelve billion, seven hundred eighty-eight million, ninety-six thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 255761929 511523858 1278809645 2557619290 6394048225 12788096450