55136405161 has 6 divisors (see below), whose sum is σ = 57637868330. Its totient is φ = 52739169648.

The previous prime is 55136405153. The next prime is 55136405209. The reversal of 55136405161 is 16150463155.

55136405161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 54262907136 + 873498025 = 232944^2 + 29555^2 .

It is not a de Polignac number, because 55136405161 - 2³ = 55136405153 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 55136405161.

It is not an unprimeable number, because it can be changed into a prime (55136405131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52113276 + ... + 52114333.

Almost surely, 2^55136405161 is an apocalyptic number.

It is an amenable number.

55136405161 is a deficient number, since it is larger than the sum of its proper divisors (2501463169).

55136405161 is a wasteful number, since it uses less digits than its factorization.

55136405161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104227655 (or 104227632 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 55136405161 in words is "fifty-five billion, one hundred thirty-six million, four hundred five thousand, one hundred sixty-one".