55364772161 has 16 divisors (see below), whose sum is σ = 59214907008. Its totient is φ = 51650544000.

The previous prime is 55364772149. The next prime is 55364772167. The reversal of 55364772161 is 16127746355.

It is a cyclic number.

It is not a de Polignac number, because 55364772161 - 2²⁶ = 55297663297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55364772167) 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, 22220 + ... + 333501.

It is an arithmetic number, because the mean of its divisors is an integer number (3700931688).

Almost surely, 2^55364772161 is an apocalyptic number.

It is an amenable number.

55364772161 is a deficient number, since it is larger than the sum of its proper divisors (3850134847).

55364772161 is a wasteful number, since it uses less digits than its factorization.

55364772161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355912.

The product of its digits is 1058400, while the sum is 47.

The spelling of 55364772161 in words is "fifty-five billion, three hundred sixty-four million, seven hundred seventy-two thousand, one hundred sixty-one".