22787945505 has 24 divisors (see below), whose sum is σ = 42537499368. Its totient is φ = 11218680576.

The previous prime is 22787945489. The next prime is 22787945513. The reversal of 22787945505 is 50554978722.

22787945505 is a `hidden beast` number, since 2 + 2 + 7 + 87 + 9 + 4 + 550 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2148600609 + 20639344896 = 46353^2 + 143664^2 .

It is not a de Polignac number, because 22787945505 - 2⁴ = 22787945489 is a prime.

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, 19476292 + ... + 19477461.

It is an arithmetic number, because the mean of its divisors is an integer number (1772395807).

Almost surely, 2^22787945505 is an apocalyptic number.

It is an amenable number.

22787945505 is a deficient number, since it is larger than the sum of its proper divisors (19749553863).

22787945505 is a wasteful number, since it uses less digits than its factorization.

22787945505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38953777 (or 38953774 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 54.

The spelling of 22787945505 in words is "twenty-two billion, seven hundred eighty-seven million, nine hundred forty-five thousand, five hundred five".