137390532657 has 16 divisors (see below), whose sum is σ = 209363575680. Its totient is φ = 78506410752.

The previous prime is 137390532647. The next prime is 137390532661. The reversal of 137390532657 is 756235093731.

It is not a de Polignac number, because 137390532657 - 2⁷ = 137390532529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137390532647) 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, 744583 + ... + 910595.

It is an arithmetic number, because the mean of its divisors is an integer number (13085223480).

Almost surely, 2^137390532657 is an apocalyptic number.

It is an amenable number.

137390532657 is a deficient number, since it is larger than the sum of its proper divisors (71973043023).

137390532657 is a wasteful number, since it uses less digits than its factorization.

137390532657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205432.

The product of its (nonzero) digits is 3572100, while the sum is 51.

The spelling of 137390532657 in words is "one hundred thirty-seven billion, three hundred ninety million, five hundred thirty-two thousand, six hundred fifty-seven".