22159895044 has 81 divisors (see below), whose sum is σ = 46749652551. Its totient is φ = 9190739880.

The previous prime is 22159895011. The next prime is 22159895057. The reversal of 22159895044 is 44059895122.

The square root of 22159895044 is 148862.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×22159895044² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 714835309 + ... + 714835339.

Almost surely, 2^22159895044 is an apocalyptic number.

22159895044 is the 148862-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22159895044

22159895044 is an abundant number, since it is smaller than the sum of its proper divisors (24589757507).

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

22159895044 is an frugal number, since it uses more digits than its factorization.

22159895044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

Multiplying 22159895044 by its sum of digits (49), we get a square (1085834857156 = 1042034²).

22159895044 divided by its sum of digits (49) gives a square (452242756 = 21266²).

The spelling of 22159895044 in words is "twenty-two billion, one hundred fifty-nine million, eight hundred ninety-five thousand, forty-four".