26725636464 has 20 divisors (see below), whose sum is σ = 69041227656. Its totient is φ = 8908545472.

The previous prime is 26725636453. The next prime is 26725636489. The reversal of 26725636464 is 46463652762.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278391999 + ... + 278392094.

Almost surely, 2^26725636464 is an apocalyptic number.

26725636464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26725636464 is an abundant number, since it is smaller than the sum of its proper divisors (42315591192).

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

26725636464 is a wasteful number, since it uses less digits than its factorization.

26725636464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556784104 (or 556784098 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 51.

The spelling of 26725636464 in words is "twenty-six billion, seven hundred twenty-five million, six hundred thirty-six thousand, four hundred sixty-four".