20505450922 has 32 divisors (see below), whose sum is σ = 33733459584. Its totient is φ = 9271027200.

The previous prime is 20505450919. The next prime is 20505450937. The reversal of 20505450922 is 22905450502.

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, 4400818 + ... + 4405474.

It is an arithmetic number, because the mean of its divisors is an integer number (1054170612).

Almost surely, 2^20505450922 is an apocalyptic number.

20505450922 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20505450922 is a deficient number, since it is larger than the sum of its proper divisors (13228008662).

20505450922 is a wasteful number, since it uses less digits than its factorization.

20505450922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 20505450922 in words is "twenty billion, five hundred five million, four hundred fifty thousand, nine hundred twenty-two".