66701166517074 has 32 divisors (see below), whose sum is σ = 134425849155840. Its totient is φ = 22063149227600.

The previous prime is 66701166517039. The next prime is 66701166517087. The reversal of 66701166517074 is 47071566110766.

It is a super-2 number, since 2×66701166517074² (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 15 ways as a sum of consecutive naturals, for example, 18949117 + ... + 22191695.

It is an arithmetic number, because the mean of its divisors is an integer number (4200807786120).

Almost surely, 2^{66701166517074} is an apocalyptic number.

66701166517074 is an abundant number, since it is smaller than the sum of its proper divisors (67724682638766).

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

66701166517074 is a wasteful number, since it uses less digits than its factorization.

66701166517074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268886.

The product of its (nonzero) digits is 8890560, while the sum is 57.

The spelling of 66701166517074 in words is "sixty-six trillion, seven hundred one billion, one hundred sixty-six million, five hundred seventeen thousand, seventy-four".