16157122722 has 24 divisors (see below), whose sum is σ = 37699953564. Its totient is φ = 4971422304.

The previous prime is 16157122691. The next prime is 16157122747. The reversal of 16157122722 is 22722175161.

16157122722 is a `hidden beast` number, since 1 + 61 + 571 + 2 + 2 + 7 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12080427921 + 4076694801 = 109911^2 + 63849^2 .

It is a super-2 number, since 2×16157122722² (a number of 21 digits) contains 22 as substring.

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, 34523533 + ... + 34524000.

Almost surely, 2^16157122722 is an apocalyptic number.

16157122722 is an abundant number, since it is smaller than the sum of its proper divisors (21542830842).

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

16157122722 is a wasteful number, since it uses less digits than its factorization.

16157122722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69047554 (or 69047551 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

Adding to 16157122722 its reverse (22722175161), we get a palindrome (38879297883).

The spelling of 16157122722 in words is "sixteen billion, one hundred fifty-seven million, one hundred twenty-two thousand, seven hundred twenty-two".