51995856676 has 9 divisors (see below), whose sum is σ = 90993547281. Its totient is φ = 25997700312.

The previous prime is 51995856659. The next prime is 51995856677. The reversal of 51995856676 is 67665859915.

The square root of 51995856676 is 228026.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2166902500 + 49828954176 = 46550^2 + 223224^2 .

It is a super-2 number, since 2×51995856676² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51995856677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 399046 + ... + 513058.

Almost surely, 2^51995856676 is an apocalyptic number.

51995856676 is the 228026-th square number.

It is an amenable number.

51995856676 is a deficient number, since it is larger than the sum of its proper divisors (38997690605).

51995856676 is an frugal number, since it uses more digits than its factorization.

51995856676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228030 (or 114015 counting only the distinct ones).

The product of its digits is 122472000, while the sum is 67.

The spelling of 51995856676 in words is "fifty-one billion, nine hundred ninety-five million, eight hundred fifty-six thousand, six hundred seventy-six".