22115503254 has 48 divisors (see below), whose sum is σ = 47954710800. Its totient is φ = 6796303488.

The previous prime is 22115503229. The next prime is 22115503271. The reversal of 22115503254 is 45230551122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 827452 + ... + 853760.

It is an arithmetic number, because the mean of its divisors is an integer number (999056475).

Almost surely, 2^22115503254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22115503254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23977355400).

22115503254 is an abundant number, since it is smaller than the sum of its proper divisors (25839207546).

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

22115503254 is a wasteful number, since it uses less digits than its factorization.

22115503254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27169 (or 27156 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 22115503254 in words is "twenty-two billion, one hundred fifteen million, five hundred three thousand, two hundred fifty-four".