26401256264 has 16 divisors (see below), whose sum is σ = 49645018800. Its totient is φ = 13162584592.

The previous prime is 26401256249. The next prime is 26401256269. The reversal of 26401256264 is 46265210462.

It is not an unprimeable number, because it can be changed into a prime (26401256269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4752494 + ... + 4758045.

It is an arithmetic number, because the mean of its divisors is an integer number (3102813675).

Almost surely, 2^26401256264 is an apocalyptic number.

It is an amenable number.

26401256264 is a deficient number, since it is larger than the sum of its proper divisors (23243762536).

26401256264 is a wasteful number, since it uses less digits than its factorization.

26401256264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510892 (or 9510888 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 26401256264 in words is "twenty-six billion, four hundred one million, two hundred fifty-six thousand, two hundred sixty-four".