26513266464 has 48 divisors (see below), whose sum is σ = 77330363040. Its totient is φ = 8837755200.

The previous prime is 26513266361. The next prime is 26513266469. The reversal of 26513266464 is 46466231562.

It is a happy number.

26513266464 is a `hidden beast` number, since 265 + 1 + 326 + 6 + 4 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (26513266469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15342462 + ... + 15344189.

It is an arithmetic number, because the mean of its divisors is an integer number (1611049230).

Almost surely, 2^26513266464 is an apocalyptic number.

26513266464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26513266464 is an abundant number, since it is smaller than the sum of its proper divisors (50817096576).

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

26513266464 is a wasteful number, since it uses less digits than its factorization.

26513266464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30686670 (or 30686656 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The spelling of 26513266464 in words is "twenty-six billion, five hundred thirteen million, two hundred sixty-six thousand, four hundred sixty-four".