51224414681 has 8 divisors (see below), whose sum is σ = 56161992000. Its totient is φ = 46333639440.

The previous prime is 51224414641. The next prime is 51224414699. The reversal of 51224414681 is 18641442215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51224414681 - 2³⁴ = 34044545497 is a prime.

It is a super-4 number, since 4×51224414681⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51224414621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11698226 + ... + 11702603.

It is an arithmetic number, because the mean of its divisors is an integer number (7020249000).

Almost surely, 2^51224414681 is an apocalyptic number.

It is an amenable number.

51224414681 is a deficient number, since it is larger than the sum of its proper divisors (4937577319).

51224414681 is a wasteful number, since it uses less digits than its factorization.

51224414681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23401039.

The product of its digits is 61440, while the sum is 38.

Adding to 51224414681 its reverse (18641442215), we get a palindrome (69865856896).

The spelling of 51224414681 in words is "fifty-one billion, two hundred twenty-four million, four hundred fourteen thousand, six hundred eighty-one".