66177152000 has 176 divisors, whose sum is σ = 173793247680. Its totient is φ = 25076736000.

The previous prime is 66177151987. The next prime is 66177152003. The reversal of 66177152000 is 25177166.

It is a super-2 number, since 2×66177152000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66177152003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2418395 + ... + 2445605.

Almost surely, 2^66177152000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66177152000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86896623840).

66177152000 is an abundant number, since it is smaller than the sum of its proper divisors (107616095680).

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

66177152000 is a wasteful number, since it uses less digits than its factorization.

66177152000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27265 (or 27237 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 66177152000 in words is "sixty-six billion, one hundred seventy-seven million, one hundred fifty-two thousand".