66644266230 has 24 divisors (see below), whose sum is σ = 173275092432. Its totient is φ = 17771804304.

The previous prime is 66644266229. The next prime is 66644266243. The reversal of 66644266230 is 3266244666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370245834 + ... + 370246013.

It is an arithmetic number, because the mean of its divisors is an integer number (7219795518).

Almost surely, 2^66644266230 is an apocalyptic number.

66644266230 is an abundant number, since it is smaller than the sum of its proper divisors (106630826202).

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

66644266230 is a wasteful number, since it uses less digits than its factorization.

66644266230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740491860 (or 740491857 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 45.

The spelling of 66644266230 in words is "sixty-six billion, six hundred forty-four million, two hundred sixty-six thousand, two hundred thirty".