55665615061 has 16 divisors (see below), whose sum is σ = 64346296320. Its totient is φ = 47167274880.

The previous prime is 55665615017. The next prime is 55665615067. The reversal of 55665615061 is 16051656655.

It is a cyclic number.

It is not a de Polignac number, because 55665615061 - 2²⁷ = 55531397333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665615067) 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, 5500396 + ... + 5510506.

It is an arithmetic number, because the mean of its divisors is an integer number (4021643520).

Almost surely, 2^55665615061 is an apocalyptic number.

It is an amenable number.

55665615061 is a deficient number, since it is larger than the sum of its proper divisors (8680681259).

55665615061 is a wasteful number, since it uses less digits than its factorization.

55665615061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19044.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 55665615061 in words is "fifty-five billion, six hundred sixty-five million, six hundred fifteen thousand, sixty-one".