22061390715 has 256 divisors, whose sum is σ = 50814812160. Its totient is φ = 8831047680.

The previous prime is 22061390651. The next prime is 22061390717. The reversal of 22061390715 is 51709316022.

22061390715 is a `hidden beast` number, since 2 + 20 + 613 + 9 + 0 + 7 + 15 = 666.

It is not a de Polignac number, because 22061390715 - 2⁶ = 22061390651 is a prime.

It is a super-2 number, since 2×22061390715² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22061390715.

It is not an unprimeable number, because it can be changed into a prime (22061390717) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 20183709 + ... + 20184801.

It is an arithmetic number, because the mean of its divisors is an integer number (198495360).

Almost surely, 2^22061390715 is an apocalyptic number.

22061390715 is an abundant number, since it is smaller than the sum of its proper divisors (28753421445).

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

22061390715 is a wasteful number, since it uses less digits than its factorization.

22061390715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 22061390715 in words is "twenty-two billion, sixty-one million, three hundred ninety thousand, seven hundred fifteen".