51293434686 has 32 divisors (see below), whose sum is σ = 110521209120. Its totient is φ = 15776446464.

The previous prime is 51293434667. The next prime is 51293434697. The reversal of 51293434686 is 68643439215.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75450 + ... + 329058.

It is an arithmetic number, because the mean of its divisors is an integer number (3453787785).

Almost surely, 2^51293434686 is an apocalyptic number.

51293434686 is an abundant number, since it is smaller than the sum of its proper divisors (59227774434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51293434686 is a wasteful number, since it uses less digits than its factorization.

51293434686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256220.

The product of its digits is 3732480, while the sum is 51.

The spelling of 51293434686 in words is "fifty-one billion, two hundred ninety-three million, four hundred thirty-four thousand, six hundred eighty-six".