55168686155 has 12 divisors (see below), whose sum is σ = 72767953776. Its totient is φ = 40122680400.

The previous prime is 55168686149. The next prime is 55168686191.

It is a happy number.

55168686155 is nontrivially palindromic in base 10.

55168686155 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 55168686155 - 2⁶ = 55168686091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55168686155.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45593351 + ... + 45594560.

It is an arithmetic number, because the mean of its divisors is an integer number (6063996148).

Almost surely, 2^55168686155 is an apocalyptic number.

55168686155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55168686155 is a deficient number, since it is larger than the sum of its proper divisors (17599267621).

55168686155 is a wasteful number, since it uses less digits than its factorization.

55168686155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91187938 (or 91187927 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 56.

The spelling of 55168686155 in words is "fifty-five billion, one hundred sixty-eight million, six hundred eighty-six thousand, one hundred fifty-five".