22158853506 has 64 divisors (see below), whose sum is σ = 51297100800. Its totient is φ = 7082380800.

The previous prime is 22158853487. The next prime is 22158853517. The reversal of 22158853506 is 60535885122.

22158853506 is a `hidden beast` number, since 2 + 2 + 15 + 88 + 53 + 506 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121746 + ... + 243186.

It is an arithmetic number, because the mean of its divisors is an integer number (801517200).

Almost surely, 2^22158853506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22158853506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25648550400).

22158853506 is an abundant number, since it is smaller than the sum of its proper divisors (29138247294).

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

22158853506 is a wasteful number, since it uses less digits than its factorization.

22158853506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121592 (or 121586 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 22158853506 in words is "twenty-two billion, one hundred fifty-eight million, eight hundred fifty-three thousand, five hundred six".