20522020745 has 16 divisors (see below), whose sum is σ = 25955173440. Its totient is φ = 15533959104.

The previous prime is 20522020721. The next prime is 20522020763. The reversal of 20522020745 is 54702022502.

It is a cyclic number.

It is not a de Polignac number, because 20522020745 - 2¹⁸ = 20521758601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59807 + ... + 211236.

It is an arithmetic number, because the mean of its divisors is an integer number (1622198340).

Almost surely, 2^20522020745 is an apocalyptic number.

It is an amenable number.

20522020745 is a deficient number, since it is larger than the sum of its proper divisors (5433152695).

20522020745 is a wasteful number, since it uses less digits than its factorization.

20522020745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271864.

The product of its (nonzero) digits is 11200, while the sum is 29.

The spelling of 20522020745 in words is "twenty billion, five hundred twenty-two million, twenty thousand, seven hundred forty-five".