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1313869130450 = 25247234492
BaseRepresentation
bin10011000111101000101…
…100111110101011010010
311122121022210120021112022
4103013220230332223102
5133011300444133300
62443325543131442
7163631621225132
oct23075054765322
94577283507468
101313869130450
11467232965178
12192778143b82
1396b88574ac6
144783d516ac2
152429b807285
hex131e8b3ead2

1313869130450 has 54 divisors (see below), whose sum is σ = 2497622703951. Its totient is φ = 514216652480.

The previous prime is 1313869130401. The next prime is 1313869130459. The reversal of 1313869130450 is 540319683131.

It can be written as a sum of positive squares in 5 ways, for example, as 6361498081 + 1307507632369 = 79759^2 + 1143463^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=810515.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313869130459) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 380940326 + ... + 380943774.

Almost surely, 21313869130450 is an apocalyptic number.

1313869130450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313869130450 is a deficient number, since it is larger than the sum of its proper divisors (1183753573501).

1313869130450 is an frugal number, since it uses more digits than its factorization.

1313869130450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7004 (or 3503 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 1313869130450 in words is "one trillion, three hundred thirteen billion, eight hundred sixty-nine million, one hundred thirty thousand, four hundred fifty".

Divisors: 1 2 5 10 25 47 50 94 235 470 1175 2209 2350 3449 4418 6898 11045 17245 22090 34490 55225 86225 110450 162103 172450 324206 810515 1621030 4052575 7618841 8105150 11895601 15237682 23791202 38094205 59478005 76188410 118956010 190471025 297390025 380942050 559093247 594780050 1118186494 2795466235 5590932470 13977331175 26277382609 27954662350 52554765218 131386913045 262773826090 656934565225 1313869130450