22155534145 has 8 divisors (see below), whose sum is σ = 26587495656. Its totient is φ = 17723857536.

The previous prime is 22155534131. The next prime is 22155534161. The reversal of 22155534145 is 54143555122.

It can be written as a sum of positive squares in 4 ways, for example, as 3303145729 + 18852388416 = 57473^2 + 137304^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22155534145 - 2⁵ = 22155534113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181189 + ... + 277741.

It is an arithmetic number, because the mean of its divisors is an integer number (3323436957).

Almost surely, 2^22155534145 is an apocalyptic number.

It is an amenable number.

22155534145 is a deficient number, since it is larger than the sum of its proper divisors (4431961511).

22155534145 is an equidigital number, since it uses as much as digits as its factorization.

22155534145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142451.

The product of its digits is 120000, while the sum is 37.

The spelling of 22155534145 in words is "twenty-two billion, one hundred fifty-five million, five hundred thirty-four thousand, one hundred forty-five".