640131034364 has 6 divisors (see below), whose sum is σ = 1120229310144. Its totient is φ = 320065517180.

The previous prime is 640131034357. The next prime is 640131034409. The reversal of 640131034364 is 463430131046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80016379292 + ... + 80016379299.

It is an arithmetic number, because the mean of its divisors is an integer number (186704885024).

Almost surely, 2^640131034364 is an apocalyptic number.

It is an amenable number.

640131034364 is a deficient number, since it is larger than the sum of its proper divisors (480098275780).

640131034364 is a wasteful number, since it uses less digits than its factorization.

640131034364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160032758595 (or 160032758593 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 640131034364 in words is "six hundred forty billion, one hundred thirty-one million, thirty-four thousand, three hundred sixty-four".