51871044720499 has 8 divisors (see below), whose sum is σ = 53077447615280. Its totient is φ = 50664646349856.

The previous prime is 51871044720457. The next prime is 51871044720511. The reversal of 51871044720499 is 99402744017815.

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

It is a cyclic number.

It is not a de Polignac number, because 51871044720499 - 2⁹ = 51871044719987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51871044720899) 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, 36324097 + ... + 37725085.

It is an arithmetic number, because the mean of its divisors is an integer number (6634680951910).

Almost surely, 2^{51871044720499} is an apocalyptic number.

51871044720499 is a deficient number, since it is larger than the sum of its proper divisors (1206402894781).

51871044720499 is a wasteful number, since it uses less digits than its factorization.

51871044720499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262069.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 51871044720499 in words is "fifty-one trillion, eight hundred seventy-one billion, forty-four million, seven hundred twenty thousand, four hundred ninety-nine".