26149816565928 has 128 divisors (see below), whose sum is σ = 79243602480000. Its totient is φ = 7924013429760.

The previous prime is 26149816565911. The next prime is 26149816565953. The reversal of 26149816565928 is 82956561894162.

26149816565928 is a `hidden beast` number, since 2 + 6 + 1 + 49 + 8 + 16 + 565 + 9 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145551898 + ... + 145731446.

It is an arithmetic number, because the mean of its divisors is an integer number (619090644375).

Almost surely, 2^{26149816565928} is an apocalyptic number.

It is an amenable number.

26149816565928 is an abundant number, since it is smaller than the sum of its proper divisors (53093785914072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26149816565928 is a wasteful number, since it uses less digits than its factorization.

26149816565928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240872 (or 240862 counting only the distinct ones).

The product of its digits is 447897600, while the sum is 72.

The spelling of 26149816565928 in words is "twenty-six trillion, one hundred forty-nine billion, eight hundred sixteen million, five hundred sixty-five thousand, nine hundred twenty-eight".