51017502668 has 24 divisors (see below), whose sum is σ = 97691329344. Its totient is φ = 23119707600.

The previous prime is 51017502659. The next prime is 51017502671. The reversal of 51017502668 is 86620571015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1736930 + ... + 1766057.

It is an arithmetic number, because the mean of its divisors is an integer number (4070472056).

Almost surely, 2^51017502668 is an apocalyptic number.

It is an amenable number.

51017502668 is a deficient number, since it is larger than the sum of its proper divisors (46673826676).

51017502668 is a wasteful number, since it uses less digits than its factorization.

51017502668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503333 (or 3503331 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 51017502668 in words is "fifty-one billion, seventeen million, five hundred two thousand, six hundred sixty-eight".