16155772436388 has 96 divisors (see below), whose sum is σ = 40991878287360. Its totient is φ = 4922758638720.

The previous prime is 16155772436369. The next prime is 16155772436399. The reversal of 16155772436388 is 88363427755161.

It is a super-2 number, since 2×16155772436388² (a number of 27 digits) contains 22 as substring.

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, 8963631 + ... + 10614057.

It is an arithmetic number, because the mean of its divisors is an integer number (426998732160).

Almost surely, 2^{16155772436388} 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 16155772436388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20495939143680).

16155772436388 is an abundant number, since it is smaller than the sum of its proper divisors (24836105850972).

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

16155772436388 is a wasteful number, since it uses less digits than its factorization.

16155772436388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651057 (or 1651055 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 66.

The spelling of 16155772436388 in words is "sixteen trillion, one hundred fifty-five billion, seven hundred seventy-two million, four hundred thirty-six thousand, three hundred eighty-eight".