55544610213 has 6 divisors (see below), whose sum is σ = 80231103654. Its totient is φ = 37029740136.

The previous prime is 55544610181. The next prime is 55544610259. The reversal of 55544610213 is 31201644555.

55544610213 is a `hidden beast` number, since 5 + 5 + 544 + 6 + 102 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46359687969 + 9184922244 = 215313^2 + 95838^2 .

It is not a de Polignac number, because 55544610213 - 2⁵ = 55544610181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55544610113) 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, 3085811670 + ... + 3085811687.

It is an arithmetic number, because the mean of its divisors is an integer number (13371850609).

Almost surely, 2^55544610213 is an apocalyptic number.

It is an amenable number.

55544610213 is a deficient number, since it is larger than the sum of its proper divisors (24686493441).

55544610213 is a wasteful number, since it uses less digits than its factorization.

55544610213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171623363 (or 6171623360 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 55544610213 in words is "fifty-five billion, five hundred forty-four million, six hundred ten thousand, two hundred thirteen".