55516473994 has 4 divisors (see below), whose sum is σ = 83274710994. Its totient is φ = 27758236996.

The previous prime is 55516473989. The next prime is 55516474001. The reversal of 55516473994 is 49937461555.

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., 35020256769 + 20496217225 = 187137^2 + 143165^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13879118497 + ... + 13879118500.

Almost surely, 2^55516473994 is an apocalyptic number.

55516473994 is a deficient number, since it is larger than the sum of its proper divisors (27758237000).

55516473994 is a wasteful number, since it uses less digits than its factorization.

55516473994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27758236999.

The product of its digits is 20412000, while the sum is 58.

The spelling of 55516473994 in words is "fifty-five billion, five hundred sixteen million, four hundred seventy-three thousand, nine hundred ninety-four".