22515915001892 has 12 divisors (see below), whose sum is σ = 42433839811356. Its totient is φ = 10391960770080.

The previous prime is 22515915001817. The next prime is 22515915001991. The reversal of 22515915001892 is 29810051951522.

It can be written as a sum of positive squares in 2 ways, for example, as 4234680771556 + 18281234230336 = 2057834^2 + 4275656^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22515915001892.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216499182659 + ... + 216499182762.

It is an arithmetic number, because the mean of its divisors is an integer number (3536153317613).

Almost surely, 2^{22515915001892} is an apocalyptic number.

It is an amenable number.

22515915001892 is a deficient number, since it is larger than the sum of its proper divisors (19917924809464).

22515915001892 is a wasteful number, since it uses less digits than its factorization.

22515915001892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432998365438 (or 432998365436 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 50.

The spelling of 22515915001892 in words is "twenty-two trillion, five hundred fifteen billion, nine hundred fifteen million, one thousand, eight hundred ninety-two".