22529871818 has 16 divisors (see below), whose sum is σ = 33914254176. Its totient is φ = 11225155920.

The previous prime is 22529871797. The next prime is 22529871823. The reversal of 22529871818 is 81817892522.

It is a self number, because there is not a number n which added to its sum of digits gives 22529871818.

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, 1477280 + ... + 1492452.

It is an arithmetic number, because the mean of its divisors is an integer number (2119640886).

Almost surely, 2^22529871818 is an apocalyptic number.

22529871818 is a deficient number, since it is larger than the sum of its proper divisors (11384382358).

22529871818 is a wasteful number, since it uses less digits than its factorization.

22529871818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17749.

The product of its digits is 1290240, while the sum is 53.

The spelling of 22529871818 in words is "twenty-two billion, five hundred twenty-nine million, eight hundred seventy-one thousand, eight hundred eighteen".