55155786808 has 32 divisors (see below), whose sum is σ = 104835812400. Its totient is φ = 27202136832.

The previous prime is 55155786787. The next prime is 55155786863. The reversal of 55155786808 is 80868755155.

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, 11803 + ... + 332341.

Almost surely, 2^55155786808 is an apocalyptic number.

It is an amenable number.

55155786808 is a deficient number, since it is larger than the sum of its proper divisors (49680025592).

55155786808 is a wasteful number, since it uses less digits than its factorization.

55155786808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320839 (or 320835 counting only the distinct ones).

The product of its (nonzero) digits is 13440000, while the sum is 58.

The spelling of 55155786808 in words is "fifty-five billion, one hundred fifty-five million, seven hundred eighty-six thousand, eight hundred eight".