44139991600 has 60 divisors (see below), whose sum is σ = 106069398624. Its totient is φ = 17652156160.

The previous prime is 44139991589. The next prime is 44139991613. The reversal of 44139991600 is 619993144.

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, 2469897 + ... + 2487703.

Almost surely, 2^44139991600 is an apocalyptic number.

44139991600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44139991600 is an abundant number, since it is smaller than the sum of its proper divisors (61929407024).

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

44139991600 is a wasteful number, since it uses less digits than its factorization.

44139991600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24022 (or 24011 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 44139991600 in words is "forty-four billion, one hundred thirty-nine million, nine hundred ninety-one thousand, six hundred".