20412799793 has 4 divisors (see below), whose sum is σ = 21613552740. Its totient is φ = 19212046848.

The previous prime is 20412799787. The next prime is 20412799807. The reversal of 20412799793 is 39799721402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10482278689 + 9930521104 = 102383^2 + 99652^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412799793 - 2³⁴ = 3232930609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20412799733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600376448 + ... + 600376481.

It is an arithmetic number, because the mean of its divisors is an integer number (5403388185).

Almost surely, 2^20412799793 is an apocalyptic number.

It is an amenable number.

20412799793 is a deficient number, since it is larger than the sum of its proper divisors (1200752947).

20412799793 is a wasteful number, since it uses less digits than its factorization.

20412799793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200752946.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 20412799793 in words is "twenty billion, four hundred twelve million, seven hundred ninety-nine thousand, seven hundred ninety-three".