640456032062 has 64 divisors (see below), whose sum is σ = 1237118496768. Its totient is φ = 241333344000.

The previous prime is 640456032053. The next prime is 640456032077. The reversal of 640456032062 is 260230654046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8042762 + ... + 8122002.

It is an arithmetic number, because the mean of its divisors is an integer number (19329976512).

Almost surely, 2^640456032062 is an apocalyptic number.

640456032062 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

640456032062 is a deficient number, since it is larger than the sum of its proper divisors (596662464706).

640456032062 is a wasteful number, since it uses less digits than its factorization.

640456032062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80985.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 640456032062 in words is "six hundred forty billion, four hundred fifty-six million, thirty-two thousand, sixty-two".