16572226538 has 16 divisors (see below), whose sum is σ = 28544178624. Its totient is φ = 7068720960.

The previous prime is 16572226537. The next prime is 16572226579. The reversal of 16572226538 is 83562227561.

It is a junction number, because it is equal to n+sod(n) for n = 16572226492 and 16572226501.

It is not an unprimeable number, because it can be changed into a prime (16572226537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2802095 + ... + 2808002.

It is an arithmetic number, because the mean of its divisors is an integer number (1784011164).

Almost surely, 2^16572226538 is an apocalyptic number.

16572226538 is a deficient number, since it is larger than the sum of its proper divisors (11971952086).

16572226538 is a wasteful number, since it uses less digits than its factorization.

16572226538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610317.

The product of its digits is 1209600, while the sum is 47.

The spelling of 16572226538 in words is "sixteen billion, five hundred seventy-two million, two hundred twenty-six thousand, five hundred thirty-eight".