639792759012 has 48 divisors (see below), whose sum is σ = 1656166176000. Its totient is φ = 190590547360.

The previous prime is 639792758987. The next prime is 639792759029. The reversal of 639792759012 is 210957297936.

639792759012 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×639792759012² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41067762 + ... + 41083337.

It is an arithmetic number, because the mean of its divisors is an integer number (34503462000).

Almost surely, 2^639792759012 is an apocalyptic number.

It is an amenable number.

639792759012 is an abundant number, since it is smaller than the sum of its proper divisors (1016373416988).

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

639792759012 is a wasteful number, since it uses less digits than its factorization.

639792759012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82151176 (or 82151174 counting only the distinct ones).

The product of its (nonzero) digits is 12859560, while the sum is 60.

The spelling of 639792759012 in words is "six hundred thirty-nine billion, seven hundred ninety-two million, seven hundred fifty-nine thousand, twelve".