66142885180 has 48 divisors (see below), whose sum is σ = 139820567040. Its totient is φ = 26282389568.

The previous prime is 66142885121. The next prime is 66142885187. The reversal of 66142885180 is 8158824166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66142885187) 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, 1870827 + ... + 1905853.

It is an arithmetic number, because the mean of its divisors is an integer number (2912928480).

Almost surely, 2^66142885180 is an apocalyptic number.

It is an amenable number.

66142885180 is an abundant number, since it is smaller than the sum of its proper divisors (73677681860).

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

66142885180 is a wasteful number, since it uses less digits than its factorization.

66142885180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35658 (or 35656 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 49.

The spelling of 66142885180 in words is "sixty-six billion, one hundred forty-two million, eight hundred eighty-five thousand, one hundred eighty".