137255656461631 has 4 divisors (see below), whose sum is σ = 137405009734000. Its totient is φ = 137106303189264.

The previous prime is 137255656461587. The next prime is 137255656461689. The reversal of 137255656461631 is 136164656552731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137255656461631 - 2⁷ = 137255656461503 is a prime.

It is a super-2 number, since 2×137255656461631² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137255656461631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137255656468631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74676634806 + ... + 74676636643.

It is an arithmetic number, because the mean of its divisors is an integer number (34351252433500).

Almost surely, 2^{137255656461631} is an apocalyptic number.

137255656461631 is a deficient number, since it is larger than the sum of its proper divisors (149353272369).

137255656461631 is an equidigital number, since it uses as much as digits as its factorization.

137255656461631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149353272368.

The product of its digits is 81648000, while the sum is 61.

The spelling of 137255656461631 in words is "one hundred thirty-seven trillion, two hundred fifty-five billion, six hundred fifty-six million, four hundred sixty-one thousand, six hundred thirty-one".