139749101656 has 24 divisors (see below), whose sum is σ = 263608421220. Its totient is φ = 69456029456.

The previous prime is 139749101651. The next prime is 139749101693. The reversal of 139749101656 is 656101947931.

139749101656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139749101656² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139749101651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90070 + ... + 536293.

Almost surely, 2^139749101656 is an apocalyptic number.

It is an amenable number.

139749101656 is a deficient number, since it is larger than the sum of its proper divisors (123859319564).

139749101656 is an equidigital number, since it uses as much as digits as its factorization.

139749101656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626703 (or 626532 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 139749101656 in words is "one hundred thirty-nine billion, seven hundred forty-nine million, one hundred one thousand, six hundred fifty-six".