66644062620204 has 24 divisors (see below), whose sum is σ = 155503028787120. Its totient is φ = 22214656681984.

The previous prime is 66644062620133. The next prime is 66644062620241. The reversal of 66644062620204 is 40202626044666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6187852 + ... + 13098764.

It is an arithmetic number, because the mean of its divisors is an integer number (6479292866130).

Almost surely, 2^{66644062620204} is an apocalyptic number.

It is an amenable number.

66644062620204 is an abundant number, since it is smaller than the sum of its proper divisors (88858966166916).

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

66644062620204 is a wasteful number, since it uses less digits than its factorization.

66644062620204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714529 (or 7714527 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 66644062620204 in words is "sixty-six trillion, six hundred forty-four billion, sixty-two million, six hundred twenty thousand, two hundred four".