139664295597 has 12 divisors (see below), whose sum is σ = 192861836960. Its totient is φ = 89898855312.

The previous prime is 139664295557. The next prime is 139664295647. The reversal of 139664295597 is 795592466931.

It is not a de Polignac number, because 139664295597 - 2²⁰ = 139663247021 is a prime.

It is a super-2 number, since 2×139664295597² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139664295557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27675697 + ... + 27680742.

Almost surely, 2^139664295597 is an apocalyptic number.

It is an amenable number.

139664295597 is a deficient number, since it is larger than the sum of its proper divisors (53197541363).

139664295597 is an equidigital number, since it uses as much as digits as its factorization.

139664295597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55356500 (or 55356471 counting only the distinct ones).

The product of its digits is 110224800, while the sum is 66.

The spelling of 139664295597 in words is "one hundred thirty-nine billion, six hundred sixty-four million, two hundred ninety-five thousand, five hundred ninety-seven".