20039317919 has 8 divisors (see below), whose sum is σ = 21791564208. Its totient is φ = 18350789760.

The previous prime is 20039317913. The next prime is 20039317933. The reversal of 20039317919 is 91971393002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20039317919 - 2¹² = 20039313823 is a prime.

It is a super-2 number, since 2×20039317919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20039317919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20039317913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15928877 + ... + 15930134.

It is an arithmetic number, because the mean of its divisors is an integer number (2723945526).

Almost surely, 2^20039317919 is an apocalyptic number.

20039317919 is a deficient number, since it is larger than the sum of its proper divisors (1752246289).

20039317919 is a wasteful number, since it uses less digits than its factorization.

20039317919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31859065.

The product of its (nonzero) digits is 91854, while the sum is 44.

The spelling of 20039317919 in words is "twenty billion, thirty-nine million, three hundred seventeen thousand, nine hundred nineteen".