137639064661 has 16 divisors (see below), whose sum is σ = 158215328640. Its totient is φ = 117293158080.

The previous prime is 137639064653. The next prime is 137639064721. The reversal of 137639064661 is 166460936731.

It is a happy number.

It is not a de Polignac number, because 137639064661 - 2³ = 137639064653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137639064599 and 137639064608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137639064461) 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, 759171 + ... + 922831.

It is an arithmetic number, because the mean of its divisors is an integer number (9888458040).

Almost surely, 2^137639064661 is an apocalyptic number.

It is an amenable number.

137639064661 is a deficient number, since it is larger than the sum of its proper divisors (20576263979).

137639064661 is a wasteful number, since it uses less digits than its factorization.

137639064661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164364.

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 137639064661 in words is "one hundred thirty-seven billion, six hundred thirty-nine million, sixty-four thousand, six hundred sixty-one".