16158769944 has 128 divisors (see below), whose sum is σ = 43765056000. Its totient is φ = 4954328064.

The previous prime is 16158769901. The next prime is 16158769967. The reversal of 16158769944 is 44996785161.

It is a super-2 number, since 2×16158769944² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12535252 + ... + 12536540.

It is an arithmetic number, because the mean of its divisors is an integer number (341914500).

Almost surely, 2^16158769944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16158769944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21882528000).

16158769944 is an abundant number, since it is smaller than the sum of its proper divisors (27606286056).

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

16158769944 is a wasteful number, since it uses less digits than its factorization.

16158769944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097 (or 2093 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

The spelling of 16158769944 in words is "sixteen billion, one hundred fifty-eight million, seven hundred sixty-nine thousand, nine hundred forty-four".