20422875785 has 32 divisors (see below), whose sum is σ = 26754900480. Its totient is φ = 14874912000.

The previous prime is 20422875773. The next prime is 20422875877. The reversal of 20422875785 is 58757822402.

It is not a de Polignac number, because 20422875785 - 2⁴ = 20422875769 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7449515 + ... + 7452255.

It is an arithmetic number, because the mean of its divisors is an integer number (836090640).

Almost surely, 2^20422875785 is an apocalyptic number.

It is an amenable number.

20422875785 is a deficient number, since it is larger than the sum of its proper divisors (6332024695).

20422875785 is a wasteful number, since it uses less digits than its factorization.

20422875785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4289.

The product of its (nonzero) digits is 2508800, while the sum is 50.

The spelling of 20422875785 in words is "twenty billion, four hundred twenty-two million, eight hundred seventy-five thousand, seven hundred eighty-five".