51299864501759 has 4 divisors (see below), whose sum is σ = 51299941348920. Its totient is φ = 51299787654600.

The previous prime is 51299864501749. The next prime is 51299864501761. The reversal of 51299864501759 is 95710546899215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51299864501759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51299864501692 and 51299864501701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51299864501749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37413392 + ... + 38760309.

It is an arithmetic number, because the mean of its divisors is an integer number (12824985337230).

Almost surely, 2^{51299864501759} is an apocalyptic number.

51299864501759 is a deficient number, since it is larger than the sum of its proper divisors (76847161).

51299864501759 is an equidigital number, since it uses as much as digits as its factorization.

51299864501759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76847160.

The product of its (nonzero) digits is 244944000, while the sum is 71.

The spelling of 51299864501759 in words is "fifty-one trillion, two hundred ninety-nine billion, eight hundred sixty-four million, five hundred one thousand, seven hundred fifty-nine".