51000505109986 has 16 divisors (see below), whose sum is σ = 76674377671200. Its totient is φ = 25442380619968.

The previous prime is 51000505109959. The next prime is 51000505109987. The reversal of 51000505109986 is 68990150500015.

It is not an unprimeable number, because it can be changed into a prime (51000505109987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84061770 + ... + 84666298.

It is an arithmetic number, because the mean of its divisors is an integer number (4792148604450).

Almost surely, 2^{51000505109986} is an apocalyptic number.

51000505109986 is a deficient number, since it is larger than the sum of its proper divisors (25673872561214).

51000505109986 is a wasteful number, since it uses less digits than its factorization.

51000505109986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700193.

The product of its (nonzero) digits is 486000, while the sum is 49.

The spelling of 51000505109986 in words is "fifty-one trillion, five hundred five million, one hundred nine thousand, nine hundred eighty-six".