55726662631 has 8 divisors (see below), whose sum is σ = 57044404224. Its totient is φ = 54414423960.

The previous prime is 55726662623. The next prime is 55726662637. The reversal of 55726662631 is 13626662755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55726662631 - 2³ = 55726662623 is a prime.

It is a super-2 number, since 2×55726662631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55726662637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1355235 + ... + 1395748.

It is an arithmetic number, because the mean of its divisors is an integer number (7130550528).

Almost surely, 2^55726662631 is an apocalyptic number.

55726662631 is a deficient number, since it is larger than the sum of its proper divisors (1317741593).

55726662631 is a wasteful number, since it uses less digits than its factorization.

55726662631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751461.

The product of its digits is 2721600, while the sum is 49.

The spelling of 55726662631 in words is "fifty-five billion, seven hundred twenty-six million, six hundred sixty-two thousand, six hundred thirty-one".