51399002073669 has 16 divisors (see below), whose sum is σ = 68624414139264. Its totient is φ = 34219798790400.

The previous prime is 51399002073637. The next prime is 51399002073673. The reversal of 51399002073669 is 96637020099315.

51399002073669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51399002073669 - 2⁵ = 51399002073637 is a prime.

It is a super-2 number, since 2×51399002073669² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51399002077669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68833224 + ... + 69575934.

It is an arithmetic number, because the mean of its divisors is an integer number (4289025883704).

Almost surely, 2^{51399002073669} is an apocalyptic number.

It is an amenable number.

51399002073669 is a deficient number, since it is larger than the sum of its proper divisors (17225412065595).

51399002073669 is a wasteful number, since it uses less digits than its factorization.

51399002073669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773788.

The product of its (nonzero) digits is 16533720, while the sum is 60.

The spelling of 51399002073669 in words is "fifty-one trillion, three hundred ninety-nine billion, two million, seventy-three thousand, six hundred sixty-nine".