51994680662 has 4 divisors (see below), whose sum is σ = 77992020996. Its totient is φ = 25997340330.

The previous prime is 51994680589. The next prime is 51994680677. The reversal of 51994680662 is 26608649915.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 51994680598 and 51994680607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12998670164 + ... + 12998670167.

It is an arithmetic number, because the mean of its divisors is an integer number (19498005249).

Almost surely, 2^51994680662 is an apocalyptic number.

51994680662 is a deficient number, since it is larger than the sum of its proper divisors (25997340334).

51994680662 is a wasteful number, since it uses less digits than its factorization.

51994680662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25997340333.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 51994680662 in words is "fifty-one billion, nine hundred ninety-four million, six hundred eighty thousand, six hundred sixty-two".