44156445642 has 12 divisors (see below), whose sum is σ = 95672298930. Its totient is φ = 14718815208.

The previous prime is 44156445623. The next prime is 44156445679. The reversal of 44156445642 is 24654465144.

44156445642 is a `hidden beast` number, since 4 + 4 + 1 + 564 + 45 + 6 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26018012601 + 18138433041 = 161301^2 + 134679^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1226567917 + ... + 1226567952.

Almost surely, 2^44156445642 is an apocalyptic number.

44156445642 is an abundant number, since it is smaller than the sum of its proper divisors (51515853288).

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

44156445642 is a wasteful number, since it uses less digits than its factorization.

44156445642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453135877 (or 2453135874 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 45.

The spelling of 44156445642 in words is "forty-four billion, one hundred fifty-six million, four hundred forty-five thousand, six hundred forty-two".