26315003961 has 27 divisors (see below), whose sum is σ = 39751956517. Its totient is φ = 16773444600.

The previous prime is 26315003909. The next prime is 26315004013. The reversal of 26315003961 is 16930051362.

The square root of 26315003961 is 162219.

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

26315003961 is a `hidden beast` number, since 2 + 63 + 1 + 500 + 3 + 96 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (26315003909) and next prime (26315004013).

It is not a de Polignac number, because 26315003961 - 2²⁵ = 26281449529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26315003161) 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, 11191936 + ... + 11194286.

Almost surely, 2^26315003961 is an apocalyptic number.

26315003961 is the 162219-th square number.

26315003961 is the 81110-th centered octagonal number.

It is an amenable number.

26315003961 is a deficient number, since it is larger than the sum of its proper divisors (13436952556).

26315003961 is an frugal number, since it uses more digits than its factorization.

26315003961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754 (or 2377 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

Multiplying 26315003961 by its sum of digits (36), we get a square (947340142596 = 973314²).

The spelling of 26315003961 in words is "twenty-six billion, three hundred fifteen million, three thousand, nine hundred sixty-one".