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107981297874025 = 521163217872
BaseRepresentation
bin11000100011010101011010…
…111001101111010001101001
3112011022220121022100111100121
4120203111122321233101221
5103123131144223432100
61021353531243203241
731513251136542052
oct3043253271572151
9464286538314317
10107981297874025
113145167a646354
121013b5ba216521
134833792204874
141c944736d5729
15c73c948d951a
hex62355ae6f469

107981297874025 has 27 divisors (see below), whose sum is σ = 134087073603511. Its totient is φ = 86262461285840.

The previous prime is 107981297874013. The next prime is 107981297874077. The reversal of 107981297874025 is 520478792189701.

The square root of 107981297874025 is 10391405.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 38873267234649 + 69108030639376 = 6234843^2 + 8313124^2 .

It is not a de Polignac number, because 107981297874025 - 25 = 107981297873993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60426019182 + ... + 60426020968.

Almost surely, 2107981297874025 is an apocalyptic number.

107981297874025 is the 10391405-th square number.

107981297874025 is the 5195703-rd centered octagonal number.

It is an amenable number.

107981297874025 is a deficient number, since it is larger than the sum of its proper divisors (26105775729486).

107981297874025 is an frugal number, since it uses more digits than its factorization.

107981297874025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910 (or 2955 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 70.

The spelling of 107981297874025 in words is "one hundred seven trillion, nine hundred eighty-one billion, two hundred ninety-seven million, eight hundred seventy-four thousand, twenty-five".

Divisors: 1 5 25 1163 1787 5815 8935 29075 44675 1352569 2078281 3193369 6762845 10391405 15966845 33814225 51957025 79834225 2417040803 3713888147 12085204015 18569440735 60426020075 92847203675 4319251914961 21596259574805 107981297874025