22161345155 has 16 divisors (see below), whose sum is σ = 26712919584. Its totient is φ = 17649623040.

The previous prime is 22161345127. The next prime is 22161345179. The reversal of 22161345155 is 55154316122.

It is not a de Polignac number, because 22161345155 - 2²⁶ = 22094236291 is a prime.

It is a super-2 number, since 2×22161345155² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2734289 + ... + 2742381.

It is an arithmetic number, because the mean of its divisors is an integer number (1669557474).

Almost surely, 2^22161345155 is an apocalyptic number.

22161345155 is a deficient number, since it is larger than the sum of its proper divisors (4551574429).

22161345155 is a wasteful number, since it uses less digits than its factorization.

22161345155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10486.

The product of its digits is 36000, while the sum is 35.

The spelling of 22161345155 in words is "twenty-two billion, one hundred sixty-one million, three hundred forty-five thousand, one hundred fifty-five".