20701038239 has 4 divisors (see below), whose sum is σ = 23658329424. Its totient is φ = 17743747056.

The previous prime is 20701038223. The next prime is 20701038247. The reversal of 20701038239 is 93283010702.

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

It is not a de Polignac number, because 20701038239 - 2⁴ = 20701038223 is a prime.

It is a super-2 number, since 2×20701038239² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20701038199 and 20701038208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20701038269) 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, 1478645582 + ... + 1478645595.

It is an arithmetic number, because the mean of its divisors is an integer number (5914582356).

Almost surely, 2^20701038239 is an apocalyptic number.

20701038239 is a deficient number, since it is larger than the sum of its proper divisors (2957291185).

20701038239 is an equidigital number, since it uses as much as digits as its factorization.

20701038239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957291184.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 20701038239 in words is "twenty billion, seven hundred one million, thirty-eight thousand, two hundred thirty-nine".