51625899823681 has 8 divisors (see below), whose sum is σ = 54364355144000. Its totient is φ = 48889574773200.

The previous prime is 51625899823633. The next prime is 51625899823711. The reversal of 51625899823681 is 18632899852615.

51625899823681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51625899823681 - 2⁴³ = 42829806801473 is a prime.

It is a super-2 number, since 2×51625899823681² (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 (51625899823601) 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 7 ways as a sum of consecutive naturals, for example, 532517706 + ... + 532614643.

It is an arithmetic number, because the mean of its divisors is an integer number (6795544393000).

Almost surely, 2^{51625899823681} is an apocalyptic number.

It is an amenable number.

51625899823681 is a deficient number, since it is larger than the sum of its proper divisors (2738455320319).

51625899823681 is a wasteful number, since it uses less digits than its factorization.

51625899823681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065134919.

The product of its digits is 447897600, while the sum is 73.

The spelling of 51625899823681 in words is "fifty-one trillion, six hundred twenty-five billion, eight hundred ninety-nine million, eight hundred twenty-three thousand, six hundred eighty-one".