55105603787679 has 16 divisors (see below), whose sum is σ = 75302567864832. Its totient is φ = 35828378408448.

The previous prime is 55105603787671. The next prime is 55105603787713. The reversal of 55105603787679 is 97678730650155.

It is not a de Polignac number, because 55105603787679 - 2³ = 55105603787671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55105603787671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690454594 + ... + 690534399.

It is an arithmetic number, because the mean of its divisors is an integer number (4706410491552).

Almost surely, 2^{55105603787679} is an apocalyptic number.

55105603787679 is a deficient number, since it is larger than the sum of its proper divisors (20196964077153).

55105603787679 is a wasteful number, since it uses less digits than its factorization.

55105603787679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380989326.

The product of its (nonzero) digits is 333396000, while the sum is 69.

The spelling of 55105603787679 in words is "fifty-five trillion, one hundred five billion, six hundred three million, seven hundred eighty-seven thousand, six hundred seventy-nine".