55990887356 has 6 divisors (see below), whose sum is σ = 97984052880. Its totient is φ = 27995443676.

The previous prime is 55990887349. The next prime is 55990887391. The reversal of 55990887356 is 65378809955.

It is a junction number, because it is equal to n+sod(n) for n = 55990887292 and 55990887301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6998860916 + ... + 6998860923.

It is an arithmetic number, because the mean of its divisors is an integer number (16330675480).

Almost surely, 2^55990887356 is an apocalyptic number.

It is an amenable number.

55990887356 is a deficient number, since it is larger than the sum of its proper divisors (41993165524).

55990887356 is a wasteful number, since it uses less digits than its factorization.

55990887356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13997721843 (or 13997721841 counting only the distinct ones).

The product of its (nonzero) digits is 81648000, while the sum is 65.

The spelling of 55990887356 in words is "fifty-five billion, nine hundred ninety million, eight hundred eighty-seven thousand, three hundred fifty-six".