66610754724 has 48 divisors (see below), whose sum is σ = 165909703680. Its totient is φ = 20738702880.

The previous prime is 66610754719. The next prime is 66610754761. The reversal of 66610754724 is 42745701666.

66610754724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2041224 + ... + 2073599.

It is an arithmetic number, because the mean of its divisors is an integer number (3456452160).

Almost surely, 2^66610754724 is an apocalyptic number.

It is an amenable number.

66610754724 is an abundant number, since it is smaller than the sum of its proper divisors (99298948956).

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

66610754724 is a wasteful number, since it uses less digits than its factorization.

66610754724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4114920 (or 4114918 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 66610754724 in words is "sixty-six billion, six hundred ten million, seven hundred fifty-four thousand, seven hundred twenty-four".