42644377639212 has 24 divisors (see below), whose sum is σ = 100905006246912. Its totient is φ = 14014584200400.

The previous prime is 42644377639189. The next prime is 42644377639243. The reversal of 42644377639212 is 21293677344624.

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, 25026042364 + ... + 25026044067.

It is an arithmetic number, because the mean of its divisors is an integer number (4204375260288).

Almost surely, 2^{42644377639212} is an apocalyptic number.

It is an amenable number.

42644377639212 is an abundant number, since it is smaller than the sum of its proper divisors (58260628607700).

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

42644377639212 is a wasteful number, since it uses less digits than its factorization.

42644377639212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50052086509 (or 50052086507 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 60.

The spelling of 42644377639212 in words is "forty-two trillion, six hundred forty-four billion, three hundred seventy-seven million, six hundred thirty-nine thousand, two hundred twelve".