55639520156 has 24 divisors (see below), whose sum is σ = 110839204224. Its totient is φ = 24191095280.

The previous prime is 55639520149. The next prime is 55639520171. The reversal of 55639520156 is 65102593655.

It is a self number, because there is not a number n which added to its sum of digits gives 55639520156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27488870 + ... + 27490893.

It is an arithmetic number, because the mean of its divisors is an integer number (4618300176).

Almost surely, 2^55639520156 is an apocalyptic number.

It is an amenable number.

55639520156 is a deficient number, since it is larger than the sum of its proper divisors (55199684068).

55639520156 is a wasteful number, since it uses less digits than its factorization.

55639520156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54979801 (or 54979799 counting only the distinct ones).

The product of its (nonzero) digits is 1215000, while the sum is 47.

The spelling of 55639520156 in words is "fifty-five billion, six hundred thirty-nine million, five hundred twenty thousand, one hundred fifty-six".