26500012641 has 24 divisors (see below), whose sum is σ = 40535782560. Its totient is φ = 16624853376.

The previous prime is 26500012579. The next prime is 26500012661. The reversal of 26500012641 is 14621000562.

26500012641 is a `hidden beast` number, since 2 + 6 + 5 + 0 + 0 + 0 + 12 + 641 = 666.

It is not a de Polignac number, because 26500012641 - 2²⁵ = 26466458209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26500012661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1561186 + ... + 1578068.

It is an arithmetic number, because the mean of its divisors is an integer number (1688990940).

Almost surely, 2^26500012641 is an apocalyptic number.

It is an amenable number.

26500012641 is a deficient number, since it is larger than the sum of its proper divisors (14035769919).

26500012641 is a wasteful number, since it uses less digits than its factorization.

26500012641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27165 (or 27162 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 26500012641 in words is "twenty-six billion, five hundred million, twelve thousand, six hundred forty-one".