55660211613 has 16 divisors (see below), whose sum is σ = 82470317760. Its totient is φ = 37101972528.

The previous prime is 55660211611. The next prime is 55660211657. The reversal of 55660211613 is 31611206655.

55660211613 is a `hidden beast` number, since 556 + 60 + 21 + 16 + 13 = 666.

It is not a de Polignac number, because 55660211613 - 2¹ = 55660211611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55660211611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83131 + ... + 343847.

It is an arithmetic number, because the mean of its divisors is an integer number (5154394860).

Almost surely, 2^55660211613 is an apocalyptic number.

It is an amenable number.

55660211613 is a deficient number, since it is larger than the sum of its proper divisors (26810106147).

55660211613 is a wasteful number, since it uses less digits than its factorization.

55660211613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268633 (or 268627 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 55660211613 in words is "fifty-five billion, six hundred sixty million, two hundred eleven thousand, six hundred thirteen".