51718704999 has 8 divisors (see below), whose sum is σ = 74262755952. Its totient is φ = 31826895360.

The previous prime is 51718704991. The next prime is 51718705001. The reversal of 51718704999 is 99940781715.

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

It is not a de Polignac number, because 51718704999 - 2³ = 51718704991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51718704991) by changing a digit.

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, 663060282 + ... + 663060359.

It is an arithmetic number, because the mean of its divisors is an integer number (9282844494).

Almost surely, 2^51718704999 is an apocalyptic number.

51718704999 is a deficient number, since it is larger than the sum of its proper divisors (22544050953).

51718704999 is a wasteful number, since it uses less digits than its factorization.

51718704999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326120657.

The product of its (nonzero) digits is 5715360, while the sum is 60.

The spelling of 51718704999 in words is "fifty-one billion, seven hundred eighteen million, seven hundred four thousand, nine hundred ninety-nine".