20939126319 has 32 divisors (see below), whose sum is σ = 31128768000. Its totient is φ = 13910994432.

The previous prime is 20939126293. The next prime is 20939126347. The reversal of 20939126319 is 91362193902.

20939126319 is a `hidden beast` number, since 2 + 0 + 9 + 3 + 9 + 1 + 2 + 631 + 9 = 666.

It is not a de Polignac number, because 20939126319 - 2¹⁵ = 20939093551 is a prime.

It is a super-2 number, since 2×20939126319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20939126519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15874342 + ... + 15875660.

It is an arithmetic number, because the mean of its divisors is an integer number (972774000).

Almost surely, 2^20939126319 is an apocalyptic number.

20939126319 is a deficient number, since it is larger than the sum of its proper divisors (10189641681).

20939126319 is a wasteful number, since it uses less digits than its factorization.

20939126319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924 (or 2918 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 20939126319 in words is "twenty billion, nine hundred thirty-nine million, one hundred twenty-six thousand, three hundred nineteen".