66365080657770 has 16 divisors (see below), whose sum is σ = 159276193578720. Its totient is φ = 17697354842064.

The previous prime is 66365080657751. The next prime is 66365080657823. The reversal of 66365080657770 is 7775608056366.

It is a super-2 number, since 2×66365080657770² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106084677600 + ... + 1106084677659.

It is an arithmetic number, because the mean of its divisors is an integer number (9954762098670).

Almost surely, 2^{66365080657770} is an apocalyptic number.

66365080657770 is an abundant number, since it is smaller than the sum of its proper divisors (92911112920950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66365080657770 is a wasteful number, since it uses less digits than its factorization.

66365080657770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212169355269.

The product of its (nonzero) digits is 266716800, while the sum is 66.

The spelling of 66365080657770 in words is "sixty-six trillion, three hundred sixty-five billion, eighty million, six hundred fifty-seven thousand, seven hundred seventy".