66470500776 has 64 divisors (see below), whose sum is σ = 171455097600. Its totient is φ = 21463573248.

The previous prime is 66470500709. The next prime is 66470500799. The reversal of 66470500776 is 67700507466.

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, 230251 + ... + 431226.

It is an arithmetic number, because the mean of its divisors is an integer number (2678985900).

Almost surely, 2^66470500776 is an apocalyptic number.

It is an amenable number.

66470500776 is an abundant number, since it is smaller than the sum of its proper divisors (104984596824).

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

66470500776 is a wasteful number, since it uses less digits than its factorization.

66470500776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661618 (or 661614 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 48.

The spelling of 66470500776 in words is "sixty-six billion, four hundred seventy million, five hundred thousand, seven hundred seventy-six".