20698862039 has 4 divisors (see below), whose sum is σ = 20699205120. Its totient is φ = 20698518960.

The previous prime is 20698862033. The next prime is 20698862047. The reversal of 20698862039 is 93026889602.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20698862039 - 2²⁴ = 20682084823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20698862033) 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, 54359 + ... + 210600.

It is an arithmetic number, because the mean of its divisors is an integer number (5174801280).

Almost surely, 2^20698862039 is an apocalyptic number.

20698862039 is a deficient number, since it is larger than the sum of its proper divisors (343081).

20698862039 is an equidigital number, since it uses as much as digits as its factorization.

20698862039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343080.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 20698862039 in words is "twenty billion, six hundred ninety-eight million, eight hundred sixty-two thousand, thirty-nine".