51663902874 has 16 divisors (see below), whose sum is σ = 103391884512. Its totient is φ = 17210621168.

The previous prime is 51663902869. The next prime is 51663902893. The reversal of 51663902874 is 47820936615.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2659464 + ... + 2678819.

It is an arithmetic number, because the mean of its divisors is an integer number (6461992782).

It is a 1-persistent number, because it is pandigital, but 2⋅51663902874 = 103327805748 is not.

Almost surely, 2^51663902874 is an apocalyptic number.

51663902874 is an abundant number, since it is smaller than the sum of its proper divisors (51727981638).

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

51663902874 is a wasteful number, since it uses less digits than its factorization.

51663902874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5339901.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 51663902874 in words is "fifty-one billion, six hundred sixty-three million, nine hundred two thousand, eight hundred seventy-four".