66177041426552 has 24 divisors (see below), whose sum is σ = 144340230663360. Its totient is φ = 28361589182640.

The previous prime is 66177041426527. The next prime is 66177041426591. The reversal of 66177041426552 is 25562414077166.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84409491224 + ... + 84409492007.

It is an arithmetic number, because the mean of its divisors is an integer number (6014176277640).

Almost surely, 2^{66177041426552} is an apocalyptic number.

It is an amenable number.

66177041426552 is an abundant number, since it is smaller than the sum of its proper divisors (78163189236808).

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

66177041426552 is a wasteful number, since it uses less digits than its factorization.

66177041426552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168818983251 (or 168818983240 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 66177041426552 in words is "sixty-six trillion, one hundred seventy-seven billion, forty-one million, four hundred twenty-six thousand, five hundred fifty-two".