51934395636 has 36 divisors (see below), whose sum is σ = 138188013600. Its totient is φ = 16400335248.

The previous prime is 51934395629. The next prime is 51934395671. The reversal of 51934395636 is 63659343915.

51934395636 is a `hidden beast` number, since 5 + 19 + 34 + 39 + 563 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37963056 + ... + 37964423.

Almost surely, 2^51934395636 is an apocalyptic number.

It is an amenable number.

51934395636 is an abundant number, since it is smaller than the sum of its proper divisors (86253617964).

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

51934395636 is a wasteful number, since it uses less digits than its factorization.

51934395636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75927508 (or 75927503 counting only the distinct ones).

The product of its digits is 7873200, while the sum is 54.

The spelling of 51934395636 in words is "fifty-one billion, nine hundred thirty-four million, three hundred ninety-five thousand, six hundred thirty-six".