66644244204 has 48 divisors (see below), whose sum is σ = 158329008768. Its totient is φ = 21813187968.

The previous prime is 66644244151. The next prime is 66644244209. The reversal of 66644244204 is 40244244666.

It is not an unprimeable number, because it can be changed into a prime (66644244209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119239 + ... + 384065.

It is an arithmetic number, because the mean of its divisors is an integer number (3298521016).

Almost surely, 2^66644244204 is an apocalyptic number.

It is an amenable number.

66644244204 is an abundant number, since it is smaller than the sum of its proper divisors (91684764564).

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

66644244204 is a wasteful number, since it uses less digits than its factorization.

66644244204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265214 (or 265212 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 66644244204 in words is "sixty-six billion, six hundred forty-four million, two hundred forty-four thousand, two hundred four".