51274863689 has 8 divisors (see below), whose sum is σ = 59402582400. Its totient is φ = 43347829536.

The previous prime is 51274863649. The next prime is 51274863697. The reversal of 51274863689 is 98636847215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51274863689 - 2²⁰ = 51273815113 is a prime.

It is a super-2 number, since 2×51274863689² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51274863649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50170589 + ... + 50171610.

It is an arithmetic number, because the mean of its divisors is an integer number (7425322800).

Almost surely, 2^51274863689 is an apocalyptic number.

It is an amenable number.

51274863689 is a deficient number, since it is larger than the sum of its proper divisors (8127718711).

51274863689 is a wasteful number, since it uses less digits than its factorization.

51274863689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100342279.

The product of its digits is 17418240, while the sum is 59.

The spelling of 51274863689 in words is "fifty-one billion, two hundred seventy-four million, eight hundred sixty-three thousand, six hundred eighty-nine".