20507590039 has 2 divisors, whose sum is σ = 20507590040. Its totient is φ = 20507590038.

The previous prime is 20507589997. The next prime is 20507590099. The reversal of 20507590039 is 93009570502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20507590039 - 2⁷ = 20507589911 is a prime.

It is a super-2 number, since 2×20507590039² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20507589983 and 20507590010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20507590099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10253795019 + 10253795020.

It is an arithmetic number, because the mean of its divisors is an integer number (10253795020).

Almost surely, 2^20507590039 is an apocalyptic number.

20507590039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20507590039 is an equidigital number, since it uses as much as digits as its factorization.

20507590039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85050, while the sum is 40.

The spelling of 20507590039 in words is "twenty billion, five hundred seven million, five hundred ninety thousand, thirty-nine".