139357755646 has 16 divisors (see below), whose sum is σ = 221619277584. Its totient is φ = 65495269504.

The previous prime is 139357755643. The next prime is 139357755653. The reversal of 139357755646 is 646557753931.

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 7 ways as a sum of consecutive naturals, for example, 2624920 + ... + 2677483.

It is an arithmetic number, because the mean of its divisors is an integer number (13851204849).

Almost surely, 2^139357755646 is an apocalyptic number.

139357755646 is a deficient number, since it is larger than the sum of its proper divisors (82261521938).

139357755646 is a wasteful number, since it uses less digits than its factorization.

139357755646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303195.

The product of its digits is 71442000, while the sum is 61.

The spelling of 139357755646 in words is "one hundred thirty-nine billion, three hundred fifty-seven million, seven hundred fifty-five thousand, six hundred forty-six".