66878929032 has 32 divisors (see below), whose sum is σ = 167788142880. Its totient is φ = 22214200320.

The previous prime is 66878929009. The next prime is 66878929087. The reversal of 66878929032 is 23092987866.

It is a super-2 number, since 2×66878929032² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4916569 + ... + 4930152.

It is an arithmetic number, because the mean of its divisors is an integer number (5243379465).

Almost surely, 2^66878929032 is an apocalyptic number.

It is an amenable number.

66878929032 is an abundant number, since it is smaller than the sum of its proper divisors (100909213848).

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

66878929032 is a wasteful number, since it uses less digits than its factorization.

66878929032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9847013 (or 9847009 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 66878929032 in words is "sixty-six billion, eight hundred seventy-eight million, nine hundred twenty-nine thousand, thirty-two".