20122631839 has 2 divisors, whose sum is σ = 20122631840. Its totient is φ = 20122631838.

The previous prime is 20122631831. The next prime is 20122631899. The reversal of 20122631839 is 93813622102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20122631839 - 2³ = 20122631831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20122631798 and 20122631807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122631831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061315919 + 10061315920.

It is an arithmetic number, because the mean of its divisors is an integer number (10061315920).

Almost surely, 2^20122631839 is an apocalyptic number.

20122631839 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122631839 is an equidigital number, since it uses as much as digits as its factorization.

20122631839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

It can be divided in two parts, 2012263 and 1839, that added together give a palindrome (2014102).

The spelling of 20122631839 in words is "twenty billion, one hundred twenty-two million, six hundred thirty-one thousand, eight hundred thirty-nine".