55115651565994 has 4 divisors (see below), whose sum is σ = 82673477348994. Its totient is φ = 27557825782996.

The previous prime is 55115651565977. The next prime is 55115651566013. The reversal of 55115651565994 is 49956515651155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51710840550625 + 3404811015369 = 7191025^2 + 1845213^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13778912891497 + ... + 13778912891500.

Almost surely, 2^{55115651565994} is an apocalyptic number.

55115651565994 is a deficient number, since it is larger than the sum of its proper divisors (27557825783000).

55115651565994 is a wasteful number, since it uses less digits than its factorization.

55115651565994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27557825782999.

The product of its digits is 182250000, while the sum is 67.

The spelling of 55115651565994 in words is "fifty-five trillion, one hundred fifteen billion, six hundred fifty-one million, five hundred sixty-five thousand, nine hundred ninety-four".