20923282457 has 16 divisors (see below), whose sum is σ = 27620652672. Its totient is φ = 15344805120.

The previous prime is 20923282433. The next prime is 20923282463. The reversal of 20923282457 is 75428232902.

It is a cyclic number.

It is not a de Polignac number, because 20923282457 - 2¹⁴ = 20923266073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20923282427) 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, 7990778 + ... + 7993395.

It is an arithmetic number, because the mean of its divisors is an integer number (1726290792).

Almost surely, 2^20923282457 is an apocalyptic number.

It is an amenable number.

20923282457 is a deficient number, since it is larger than the sum of its proper divisors (6697370215).

20923282457 is a wasteful number, since it uses less digits than its factorization.

20923282457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15984208.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 20923282457 in words is "twenty billion, nine hundred twenty-three million, two hundred eighty-two thousand, four hundred fifty-seven".