66804364376 has 16 divisors (see below), whose sum is σ = 129298770240. Its totient is φ = 32324692320.

The previous prime is 66804364373. The next prime is 66804364387. The reversal of 66804364376 is 67346340866.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66804364373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134685971 + ... + 134686466.

It is an arithmetic number, because the mean of its divisors is an integer number (8081173140).

Almost surely, 2^66804364376 is an apocalyptic number.

It is an amenable number.

66804364376 is a deficient number, since it is larger than the sum of its proper divisors (62494405864).

66804364376 is a wasteful number, since it uses less digits than its factorization.

66804364376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269372474 (or 269372470 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 53.

The spelling of 66804364376 in words is "sixty-six billion, eight hundred four million, three hundred sixty-four thousand, three hundred seventy-six".