51651656501506 has 8 divisors (see below), whose sum is σ = 77477535202320. Its totient is φ = 25825811434068.

The previous prime is 51651656501479. The next prime is 51651656501561. The reversal of 51651656501506 is 60510565615615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4134576 + ... + 10972603.

It is an arithmetic number, because the mean of its divisors is an integer number (9684691900290).

Almost surely, 2^{51651656501506} is an apocalyptic number.

51651656501506 is a deficient number, since it is larger than the sum of its proper divisors (25825878700814).

51651656501506 is a wasteful number, since it uses less digits than its factorization.

51651656501506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16816688.

The product of its (nonzero) digits is 4050000, while the sum is 52.

The spelling of 51651656501506 in words is "fifty-one trillion, six hundred fifty-one billion, six hundred fifty-six million, five hundred one thousand, five hundred six".