20923962969 has 32 divisors (see below), whose sum is σ = 34346281984. Its totient is φ = 11033755200.

The previous prime is 20923962929. The next prime is 20923962977. The reversal of 20923962969 is 96926932902.

It is not a de Polignac number, because 20923962969 - 2¹² = 20923958873 is a prime.

It is a super-2 number, since 2×20923962969² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20923962929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1248294 + ... + 1264944.

It is an arithmetic number, because the mean of its divisors is an integer number (1073321312).

Almost surely, 2^20923962969 is an apocalyptic number.

It is an amenable number.

20923962969 is a deficient number, since it is larger than the sum of its proper divisors (13422319015).

20923962969 is a wasteful number, since it uses less digits than its factorization.

20923962969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21277.

The product of its (nonzero) digits is 5668704, while the sum is 57.

The spelling of 20923962969 in words is "twenty billion, nine hundred twenty-three million, nine hundred sixty-two thousand, nine hundred sixty-nine".