640744014474024 has 16 divisors (see below), whose sum is σ = 1601860036185120. Its totient is φ = 213581338158000.

The previous prime is 640744014473947. The next prime is 640744014474043. The reversal of 640744014474024 is 420474410447046.

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, 13348833634852 + ... + 13348833634899.

It is an arithmetic number, because the mean of its divisors is an integer number (100116252261570).

Almost surely, 2^{640744014474024} is an apocalyptic number.

It is an amenable number.

640744014474024 is an abundant number, since it is smaller than the sum of its proper divisors (961116021711096).

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

640744014474024 is a wasteful number, since it uses less digits than its factorization.

640744014474024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26697667269760 (or 26697667269756 counting only the distinct ones).

The product of its (nonzero) digits is 9633792, while the sum is 51.

The spelling of 640744014474024 in words is "six hundred forty trillion, seven hundred forty-four billion, fourteen million, four hundred seventy-four thousand, twenty-four".