51994970716 has 12 divisors (see below), whose sum is σ = 97990521832. Its totient is φ = 23997678768.

The previous prime is 51994970683. The next prime is 51994970717. The reversal of 51994970716 is 61707949915.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51994970717) 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, 499951590 + ... + 499951693.

Almost surely, 2^51994970716 is an apocalyptic number.

It is an amenable number.

51994970716 is a deficient number, since it is larger than the sum of its proper divisors (45995551116).

51994970716 is a wasteful number, since it uses less digits than its factorization.

51994970716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999903300 (or 999903298 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 58.

The spelling of 51994970716 in words is "fifty-one billion, nine hundred ninety-four million, nine hundred seventy thousand, seven hundred sixteen".