139357755647 has 4 divisors (see below), whose sum is σ = 152026642536. Its totient is φ = 126688868760.

The previous prime is 139357755643. The next prime is 139357755653. The reversal of 139357755647 is 746557753931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139357755647 - 2² = 139357755643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139357755647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139357755643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6334443428 + ... + 6334443449.

It is an arithmetic number, because the mean of its divisors is an integer number (38006660634).

Almost surely, 2^139357755647 is an apocalyptic number.

139357755647 is a deficient number, since it is larger than the sum of its proper divisors (12668886889).

139357755647 is a wasteful number, since it uses less digits than its factorization.

139357755647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12668886888.

The product of its digits is 83349000, while the sum is 62.

The spelling of 139357755647 in words is "one hundred thirty-nine billion, three hundred fifty-seven million, seven hundred fifty-five thousand, six hundred forty-seven".