51665216200336 has 40 divisors (see below), whose sum is σ = 100162753465400. Its totient is φ = 25816768588800.

The previous prime is 51665216200327. The next prime is 51665216200337. The reversal of 51665216200336 is 63300261256615.

It can be written as a sum of positive squares in 4 ways, for example, as 649281408400 + 51015934791936 = 805780^2 + 7142544^2 .

It is a super-2 number, since 2×51665216200336² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51665216200337) 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, 172412236 + ... + 172711636.

It is an arithmetic number, because the mean of its divisors is an integer number (2504068836635).

Almost surely, 2^{51665216200336} is an apocalyptic number.

It is an amenable number.

51665216200336 is a deficient number, since it is larger than the sum of its proper divisors (48497537265064).

51665216200336 is a wasteful number, since it uses less digits than its factorization.

51665216200336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305987 (or 305981 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 51665216200336 in words is "fifty-one trillion, six hundred sixty-five billion, two hundred sixteen million, two hundred thousand, three hundred thirty-six".