55975444945 has 64 divisors (see below), whose sum is σ = 79994880000. Its totient is φ = 36811272960.

The previous prime is 55975444939. The next prime is 55975444949. The reversal of 55975444945 is 54944457955.

It is not a de Polignac number, because 55975444945 - 2¹⁹ = 55974920657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is not an unprimeable number, because it can be changed into a prime (55975444949) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15995806 + ... + 15999304.

It is an arithmetic number, because the mean of its divisors is an integer number (1249920000).

Almost surely, 2^55975444945 is an apocalyptic number.

It is an amenable number.

55975444945 is a deficient number, since it is larger than the sum of its proper divisors (24019435055).

55975444945 is a wasteful number, since it uses less digits than its factorization.

55975444945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3758.

The product of its digits is 90720000, while the sum is 61.

The spelling of 55975444945 in words is "fifty-five billion, nine hundred seventy-five million, four hundred forty-four thousand, nine hundred forty-five".