22515320705 has 8 divisors (see below), whose sum is σ = 27019532904. Its totient is φ = 18011491200.

The previous prime is 22515320689. The next prime is 22515320753. The reversal of 22515320705 is 50702351522.

It can be written as a sum of positive squares in 4 ways, for example, as 1925366641 + 20589954064 = 43879^2 + 143492^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22515320705 - 2⁴ = 22515320689 is a prime.

It is a Duffinian number.

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, 55475 + ... + 219335.

It is an arithmetic number, because the mean of its divisors is an integer number (3377441613).

Almost surely, 2^22515320705 is an apocalyptic number.

It is an amenable number.

22515320705 is a deficient number, since it is larger than the sum of its proper divisors (4504212199).

22515320705 is a wasteful number, since it uses less digits than its factorization.

22515320705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191347.

The product of its (nonzero) digits is 21000, while the sum is 32.

The spelling of 22515320705 in words is "twenty-two billion, five hundred fifteen million, three hundred twenty thousand, seven hundred five".