51001320005099 has 4 divisors (see below), whose sum is σ = 51326169177264. Its totient is φ = 50676470832936.

The previous prime is 51001320005089. The next prime is 51001320005113. The reversal of 51001320005099 is 99050002310015.

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-51001320005099 is a prime.

It is a super-2 number, since 2×51001320005099² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51001320005039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162424585847 + ... + 162424586160.

It is an arithmetic number, because the mean of its divisors is an integer number (12831542294316).

Almost surely, 2^{51001320005099} is an apocalyptic number.

51001320005099 is a deficient number, since it is larger than the sum of its proper divisors (324849172165).

51001320005099 is a wasteful number, since it uses less digits than its factorization.

51001320005099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324849172164.

The product of its (nonzero) digits is 12150, while the sum is 35.

The spelling of 51001320005099 in words is "fifty-one trillion, one billion, three hundred twenty million, five thousand, ninety-nine".