55579786899 has 32 divisors (see below), whose sum is σ = 91220720640. Its totient is φ = 29312675712.

The previous prime is 55579786883. The next prime is 55579786901. The reversal of 55579786899 is 99868797555.

55579786899 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 55579786899 - 2⁴ = 55579786883 is a prime.

It is a super-2 number, since 2×55579786899² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55579786399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3474682 + ... + 3490640.

It is an arithmetic number, because the mean of its divisors is an integer number (2850647520).

Almost surely, 2^55579786899 is an apocalyptic number.

55579786899 is a deficient number, since it is larger than the sum of its proper divisors (35640933741).

55579786899 is a wasteful number, since it uses less digits than its factorization.

55579786899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28739.

The product of its digits is 1714608000, while the sum is 78.

The spelling of 55579786899 in words is "fifty-five billion, five hundred seventy-nine million, seven hundred eighty-six thousand, eight hundred ninety-nine".