512679187391 has 24 divisors (see below), whose sum is σ = 604715425920. Its totient is φ = 433302089472.

The previous prime is 512679187387. The next prime is 512679187439. The reversal of 512679187391 is 193781976215.

It is not a de Polignac number, because 512679187391 - 2² = 512679187387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 512679187391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512679187991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14744915 + ... + 14779643.

It is an arithmetic number, because the mean of its divisors is an integer number (25196476080).

Almost surely, 2^512679187391 is an apocalyptic number.

512679187391 is a deficient number, since it is larger than the sum of its proper divisors (92036238529).

512679187391 is a wasteful number, since it uses less digits than its factorization.

512679187391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38943 (or 38936 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 59.

The spelling of 512679187391 in words is "five hundred twelve billion, six hundred seventy-nine million, one hundred eighty-seven thousand, three hundred ninety-one".