66877610601376 has 12 divisors (see below), whose sum is σ = 131665295871522. Its totient is φ = 33438805300672.

The previous prime is 66877610601359. The next prime is 66877610601467. The reversal of 66877610601376 is 67310601677866.

It can be written as a sum of positive squares in only one way, i.e., 58887513392400 + 7990097208976 = 7673820^2 + 2826676^2 .

It is a super-2 number, since 2×66877610601376² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044962665615 + ... + 1044962665678.

Almost surely, 2^{66877610601376} is an apocalyptic number.

It is an amenable number.

66877610601376 is a deficient number, since it is larger than the sum of its proper divisors (64787685270146).

66877610601376 is a wasteful number, since it uses less digits than its factorization.

66877610601376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089925331303 (or 2089925331295 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 64.

The spelling of 66877610601376 in words is "sixty-six trillion, eight hundred seventy-seven billion, six hundred ten million, six hundred one thousand, three hundred seventy-six".