655550525656231 has 4 divisors (see below), whose sum is σ = 676697316806464. Its totient is φ = 634403734506000.

The previous prime is 655550525656139. The next prime is 655550525656283. The reversal of 655550525656231 is 132656525055556.

It is a happy number.

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 655550525656231 - 2²³ = 655550517267623 is a prime.

It is a super-2 number, since 2×655550525656231² (a number of 30 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 655550525656231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655550525656031) 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, 10573395575070 + ... + 10573395575131.

It is an arithmetic number, because the mean of its divisors is an integer number (169174329201616).

Almost surely, 2^{655550525656231} is an apocalyptic number.

655550525656231 is a deficient number, since it is larger than the sum of its proper divisors (21146791150233).

655550525656231 is a wasteful number, since it uses less digits than its factorization.

655550525656231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21146791150232.

The product of its (nonzero) digits is 202500000, while the sum is 61.

The spelling of 655550525656231 in words is "six hundred fifty-five trillion, five hundred fifty billion, five hundred twenty-five million, six hundred fifty-six thousand, two hundred thirty-one".