655137706623 has 16 divisors (see below), whose sum is σ = 884321800320. Its totient is φ = 431359382304.

The previous prime is 655137706549. The next prime is 655137706637. The reversal of 655137706623 is 326607731556.

It is not a de Polignac number, because 655137706623 - 2⁸ = 655137706367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655137726623) 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, 371673 + ... + 1203501.

It is an arithmetic number, because the mean of its divisors is an integer number (55270112520).

Almost surely, 2^655137706623 is an apocalyptic number.

655137706623 is a deficient number, since it is larger than the sum of its proper divisors (229184093697).

655137706623 is a wasteful number, since it uses less digits than its factorization.

655137706623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835078.

The product of its (nonzero) digits is 4762800, while the sum is 51.

The spelling of 655137706623 in words is "six hundred fifty-five billion, one hundred thirty-seven million, seven hundred six thousand, six hundred twenty-three".