66715080855 has 64 divisors (see below), whose sum is σ = 113679244800. Its totient is φ = 33314803200.

The previous prime is 66715080829. The next prime is 66715080877. The reversal of 66715080855 is 55808051766.

66715080855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66715080855 - 2⁶ = 66715080791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66715080798 and 66715080807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18967557 + ... + 18971073.

It is an arithmetic number, because the mean of its divisors is an integer number (1776238200).

Almost surely, 2^66715080855 is an apocalyptic number.

66715080855 is a deficient number, since it is larger than the sum of its proper divisors (46964163945).

66715080855 is a wasteful number, since it uses less digits than its factorization.

66715080855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304.

The product of its (nonzero) digits is 2016000, while the sum is 51.

The spelling of 66715080855 in words is "sixty-six billion, seven hundred fifteen million, eighty thousand, eight hundred fifty-five".