55379767989 has 128 divisors (see below), whose sum is σ = 97869291520. Its totient is φ = 27041817600.

The previous prime is 55379767969. The next prime is 55379767997. The reversal of 55379767989 is 98976797355.

55379767989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55379767989 - 2⁵ = 55379767957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55379767989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55379767969) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 57269184 + ... + 57270150.

It is an arithmetic number, because the mean of its divisors is an integer number (764603840).

Almost surely, 2^55379767989 is an apocalyptic number.

It is an amenable number.

55379767989 is a deficient number, since it is larger than the sum of its proper divisors (42489523531).

55379767989 is a wasteful number, since it uses less digits than its factorization.

55379767989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251.

The product of its digits is 900169200, while the sum is 75.

The spelling of 55379767989 in words is "fifty-five billion, three hundred seventy-nine million, seven hundred sixty-seven thousand, nine hundred eighty-nine".