22515015404 has 12 divisors (see below), whose sum is σ = 45030030864. Its totient is φ = 9649292304.

The previous prime is 22515015377. The next prime is 22515015421. The reversal of 22515015404 is 40451051522.

22515015404 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402053819 + ... + 402053874.

It is an arithmetic number, because the mean of its divisors is an integer number (3752502572).

Almost surely, 2^22515015404 is an apocalyptic number.

It is an amenable number.

22515015404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22515015404 is a wasteful number, since it uses less digits than its factorization.

22515015404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804107704 (or 804107702 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 22515015404 its reverse (40451051522), we get a palindrome (62966066926).

The spelling of 22515015404 in words is "twenty-two billion, five hundred fifteen million, fifteen thousand, four hundred four".