640075867192 has 64 divisors (see below), whose sum is σ = 1212309504000. Its totient is φ = 316812887424.

The previous prime is 640075867187. The next prime is 640075867201. The reversal of 640075867192 is 291768570046.

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 in 15 ways as a sum of consecutive naturals, for example, 500449609 + ... + 500450887.

It is an arithmetic number, because the mean of its divisors is an integer number (18942336000).

Almost surely, 2^640075867192 is an apocalyptic number.

It is an amenable number.

640075867192 is a deficient number, since it is larger than the sum of its proper divisors (572233636808).

640075867192 is a wasteful number, since it uses less digits than its factorization.

640075867192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740 (or 2736 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 640075867192 in words is "six hundred forty billion, seventy-five million, eight hundred sixty-seven thousand, one hundred ninety-two".