22512404550 has 48 divisors (see below), whose sum is σ = 56884194000. Its totient is φ = 5890035840.

The previous prime is 22512404549. The next prime is 22512404597. The reversal of 22512404550 is 5540421522.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1407925 + ... + 1423824.

It is an arithmetic number, because the mean of its divisors is an integer number (1185087375).

Almost surely, 2^22512404550 is an apocalyptic number.

22512404550 is an abundant number, since it is smaller than the sum of its proper divisors (34371789450).

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

22512404550 is a wasteful number, since it uses less digits than its factorization.

22512404550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831817 (or 2831812 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 22512404550 in words is "twenty-two billion, five hundred twelve million, four hundred four thousand, five hundred fifty".