507509099991 has 8 divisors (see below), whose sum is σ = 751865333360. Its totient is φ = 338339399976.

The previous prime is 507509099983. The next prime is 507509100011. The reversal of 507509099991 is 199990905705.

It is not a de Polignac number, because 507509099991 - 2³ = 507509099983 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 (507509094991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9398316640 + ... + 9398316693.

It is an arithmetic number, because the mean of its divisors is an integer number (93983166670).

Almost surely, 2^507509099991 is an apocalyptic number.

507509099991 is a deficient number, since it is larger than the sum of its proper divisors (244356233369).

507509099991 is a wasteful number, since it uses less digits than its factorization.

507509099991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18796633342 (or 18796633336 counting only the distinct ones).

The product of its (nonzero) digits is 10333575, while the sum is 63.

The spelling of 507509099991 in words is "five hundred seven billion, five hundred nine million, ninety-nine thousand, nine hundred ninety-one".