55475516523665 has 16 divisors (see below), whose sum is σ = 76636042019712. Its totient is φ = 37762687365504.

The previous prime is 55475516523619. The next prime is 55475516523667. The reversal of 55475516523665 is 56632561557455.

It is a cyclic number.

It is not a de Polignac number, because 55475516523665 - 2¹⁸ = 55475516261521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55475516523667) 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, 5784720599 + ... + 5784730188.

It is an arithmetic number, because the mean of its divisors is an integer number (4789752626232).

Almost surely, 2^{55475516523665} is an apocalyptic number.

It is an amenable number.

55475516523665 is a deficient number, since it is larger than the sum of its proper divisors (21160525496047).

55475516523665 is a wasteful number, since it uses less digits than its factorization.

55475516523665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11569450936.

The product of its digits is 567000000, while the sum is 65.

The spelling of 55475516523665 in words is "fifty-five trillion, four hundred seventy-five billion, five hundred sixteen million, five hundred twenty-three thousand, six hundred sixty-five".