139398555637 has 16 divisors (see below), whose sum is σ = 153351319680. Its totient is φ = 125663385600.

The previous prime is 139398555613. The next prime is 139398555643. The reversal of 139398555637 is 736555893931.

It is a cyclic number.

It is not a de Polignac number, because 139398555637 - 2²³ = 139390167029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139398555607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554689 + ... + 765817.

It is an arithmetic number, because the mean of its divisors is an integer number (9584457480).

Almost surely, 2^139398555637 is an apocalyptic number.

It is an amenable number.

139398555637 is a deficient number, since it is larger than the sum of its proper divisors (13952764043).

139398555637 is a wasteful number, since it uses less digits than its factorization.

139398555637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211644.

The product of its digits is 91854000, while the sum is 64.

The spelling of 139398555637 in words is "one hundred thirty-nine billion, three hundred ninety-eight million, five hundred fifty-five thousand, six hundred thirty-seven".