512131082399 has 4 divisors (see below), whose sum is σ = 514078349136. Its totient is φ = 510183815664.

The previous prime is 512131082389. The next prime is 512131082401. The reversal of 512131082399 is 993280131215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 512131082399 - 2²⁰ = 512130033823 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 (512131082389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973632974 + ... + 973633499.

It is an arithmetic number, because the mean of its divisors is an integer number (128519587284).

Almost surely, 2^512131082399 is an apocalyptic number.

512131082399 is a deficient number, since it is larger than the sum of its proper divisors (1947266737).

512131082399 is a wasteful number, since it uses less digits than its factorization.

512131082399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947266736.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 512131082399 in words is "five hundred twelve billion, one hundred thirty-one million, eighty-two thousand, three hundred ninety-nine".