20022560685 has 48 divisors (see below), whose sum is σ = 34954686000. Its totient is φ = 10602289152.

The previous prime is 20022560671. The next prime is 20022560711. The reversal of 20022560685 is 58606522002.

20022560685 is a `hidden beast` number, since 20 + 0 + 2 + 25 + 606 + 8 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2024460036 + 17998100649 = 44994^2 + 134157^2 .

It is not a de Polignac number, because 20022560685 - 2²³ = 20014172077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7853791 + ... + 7856339.

It is an arithmetic number, because the mean of its divisors is an integer number (728222625).

Almost surely, 2^20022560685 is an apocalyptic number.

It is an amenable number.

20022560685 is a deficient number, since it is larger than the sum of its proper divisors (14932125315).

20022560685 is a wasteful number, since it uses less digits than its factorization.

20022560685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742 (or 3739 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 20022560685 in words is "twenty billion, twenty-two million, five hundred sixty thousand, six hundred eighty-five".