55651139654 has 24 divisors (see below), whose sum is σ = 91800148440. Its totient is φ = 25283633760.

The previous prime is 55651139651. The next prime is 55651139737. The reversal of 55651139654 is 45693115655.

It is a happy number.

It is a super-2 number, since 2×55651139654² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55651139651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450497 + ... + 560579.

It is an arithmetic number, because the mean of its divisors is an integer number (3825006185).

Almost surely, 2^55651139654 is an apocalyptic number.

55651139654 is a deficient number, since it is larger than the sum of its proper divisors (36149008786).

55651139654 is a wasteful number, since it uses less digits than its factorization.

55651139654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112196 (or 112185 counting only the distinct ones).

The product of its digits is 2430000, while the sum is 50.

The spelling of 55651139654 in words is "fifty-five billion, six hundred fifty-one million, one hundred thirty-nine thousand, six hundred fifty-four".