8139644568952 has 16 divisors (see below), whose sum is σ = 16435820764440. Its totient is φ = 3756759031776.

The previous prime is 8139644568911. The next prime is 8139644568983. The reversal of 8139644568952 is 2598654469318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39132906478 + ... + 39132906685.

Almost surely, 2^{8139644568952} is an apocalyptic number.

It is an amenable number.

8139644568952 is an abundant number, since it is smaller than the sum of its proper divisors (8296176195488).

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

8139644568952 is a wasteful number, since it uses less digits than its factorization.

8139644568952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78265813182 (or 78265813178 counting only the distinct ones).

The product of its digits is 447897600, while the sum is 70.

The spelling of 8139644568952 in words is "eight trillion, one hundred thirty-nine billion, six hundred forty-four million, five hundred sixty-eight thousand, nine hundred fifty-two".