51917732706889 has 32 divisors (see below), whose sum is σ = 62688951936000. Its totient is φ = 42002723980224.

The previous prime is 51917732706839. The next prime is 51917732706893. The reversal of 51917732706889 is 98860723771915.

It is not a de Polignac number, because 51917732706889 - 2¹⁹ = 51917732182601 is a prime.

It is a super-2 number, since 2×51917732706889² (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 (51917732706839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45115542 + ... + 46252000.

It is an arithmetic number, because the mean of its divisors is an integer number (1959029748000).

Almost surely, 2^{51917732706889} is an apocalyptic number.

It is an amenable number.

51917732706889 is a deficient number, since it is larger than the sum of its proper divisors (10771219229111).

51917732706889 is a wasteful number, since it uses less digits than its factorization.

51917732706889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137757.

The product of its (nonzero) digits is 320060160, while the sum is 73.

The spelling of 51917732706889 in words is "fifty-one trillion, nine hundred seventeen billion, seven hundred thirty-two million, seven hundred six thousand, eight hundred eighty-nine".