500131039987 has 2 divisors, whose sum is σ = 500131039988. Its totient is φ = 500131039986.

The previous prime is 500131039957. The next prime is 500131040029. The reversal of 500131039987 is 789930131005.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500131039987 is a prime.

It is not a weakly prime, because it can be changed into another prime (500131039907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250065519993 + 250065519994.

It is an arithmetic number, because the mean of its divisors is an integer number (250065519994).

Almost surely, 2^500131039987 is an apocalyptic number.

500131039987 is a deficient number, since it is larger than the sum of its proper divisors (1).

500131039987 is an equidigital number, since it uses as much as digits as its factorization.

500131039987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 500131039987 in words is "five hundred billion, one hundred thirty-one million, thirty-nine thousand, nine hundred eighty-seven".