55660116655665 has 24 divisors (see below), whose sum is σ = 96580062215208. Its totient is φ = 29653848879360.

The previous prime is 55660116655621. The next prime is 55660116655687. The reversal of 55660116655665 is 56655661106655.

55660116655665 is a `hidden beast` number, since 5 + 5 + 6 + 6 + 0 + 1 + 1 + 6 + 65 + 566 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9338793731136 + 46321322924529 = 3055944^2 + 6805977^2 .

It is not a de Polignac number, because 55660116655665 - 2⁷ = 55660116655537 is a prime.

It is a super-2 number, since 2×55660116655665² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 657179484 + ... + 657264173.

It is an arithmetic number, because the mean of its divisors is an integer number (4024169258967).

Almost surely, 2^{55660116655665} is an apocalyptic number.

It is an amenable number.

55660116655665 is a deficient number, since it is larger than the sum of its proper divisors (40919945559543).

55660116655665 is a wasteful number, since it uses less digits than its factorization.

55660116655665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314444609 (or 1314444606 counting only the distinct ones).

The product of its (nonzero) digits is 145800000, while the sum is 63.

The spelling of 55660116655665 in words is "fifty-five trillion, six hundred sixty billion, one hundred sixteen million, six hundred fifty-five thousand, six hundred sixty-five".