27400370664 has 16 divisors (see below), whose sum is σ = 68500926720. Its totient is φ = 9133456880.

The previous prime is 27400370651. The next prime is 27400370671. The reversal of 27400370664 is 46607300472.

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, 570841032 + ... + 570841079.

It is an arithmetic number, because the mean of its divisors is an integer number (4281307920).

Almost surely, 2^27400370664 is an apocalyptic number.

27400370664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27400370664 is an abundant number, since it is smaller than the sum of its proper divisors (41100556056).

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

27400370664 is a wasteful number, since it uses less digits than its factorization.

27400370664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141682120 (or 1141682116 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 39.

The spelling of 27400370664 in words is "twenty-seven billion, four hundred million, three hundred seventy thousand, six hundred sixty-four".