26664120960 has 64 divisors (see below), whose sum is σ = 84991891680. Its totient is φ = 7110431744.

The previous prime is 26664120949. The next prime is 26664121009. The reversal of 26664120960 is 6902146662.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×26664120960² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6941862 + ... + 6945701.

Almost surely, 2^26664120960 is an apocalyptic number.

26664120960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26664120960 is an abundant number, since it is smaller than the sum of its proper divisors (58327770720).

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

26664120960 is a wasteful number, since it uses less digits than its factorization.

26664120960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13887585 (or 13887573 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 26664120960 in words is "twenty-six billion, six hundred sixty-four million, one hundred twenty thousand, nine hundred sixty".