20922712045 has 16 divisors (see below), whose sum is σ = 26052894720. Its totient is φ = 16113398400.

The previous prime is 20922712043. The next prime is 20922712051. The reversal of 20922712045 is 54021722902.

It is a happy number.

It is not a de Polignac number, because 20922712045 - 2¹ = 20922712043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20922712045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20922712043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323760 + ... + 382969.

It is an arithmetic number, because the mean of its divisors is an integer number (1628305920).

Almost surely, 2^20922712045 is an apocalyptic number.

It is an amenable number.

20922712045 is a deficient number, since it is larger than the sum of its proper divisors (5130182675).

20922712045 is a wasteful number, since it uses less digits than its factorization.

20922712045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706956.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 20922712045 in words is "twenty billion, nine hundred twenty-two million, seven hundred twelve thousand, forty-five".