55972779945 has 8 divisors (see below), whose sum is σ = 89556447936. Its totient is φ = 29852149296.

The previous prime is 55972779931. The next prime is 55972779971. The reversal of 55972779945 is 54997727955.

55972779945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55972779945 - 2⁵ = 55972779913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55972779945.

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, 1865759317 + ... + 1865759346.

It is an arithmetic number, because the mean of its divisors is an integer number (11194555992).

Almost surely, 2^55972779945 is an apocalyptic number.

It is an amenable number.

55972779945 is a deficient number, since it is larger than the sum of its proper divisors (33583667991).

55972779945 is a wasteful number, since it uses less digits than its factorization.

55972779945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731518671.

The product of its digits is 250047000, while the sum is 69.

The spelling of 55972779945 in words is "fifty-five billion, nine hundred seventy-two million, seven hundred seventy-nine thousand, nine hundred forty-five".