20015130439 has 12 divisors (see below), whose sum is σ = 20725260480. Its totient is φ = 19328599200.

The previous prime is 20015130389. The next prime is 20015130451. The reversal of 20015130439 is 93403151002.

It is not a de Polignac number, because 20015130439 - 2¹³ = 20015122247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20015130479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 438579 + ... + 482059.

It is an arithmetic number, because the mean of its divisors is an integer number (1727105040).

Almost surely, 2^20015130439 is an apocalyptic number.

20015130439 is a deficient number, since it is larger than the sum of its proper divisors (710130041).

20015130439 is an equidigital number, since it uses as much as digits as its factorization.

20015130439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44022 (or 43991 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 20015130439 in words is "twenty billion, fifteen million, one hundred thirty thousand, four hundred thirty-nine".