51250886065 has 16 divisors (see below), whose sum is σ = 62260845696. Its totient is φ = 40494486400.

The previous prime is 51250886041. The next prime is 51250886069. The reversal of 51250886065 is 56068805215.

It is a happy number.

It is not a de Polignac number, because 51250886065 - 2¹¹ = 51250884017 is a prime.

It is a super-2 number, since 2×51250886065² (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 (51250886069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1506645 + ... + 1540285.

It is an arithmetic number, because the mean of its divisors is an integer number (3891302856).

Almost surely, 2^51250886065 is an apocalyptic number.

It is an amenable number.

51250886065 is a deficient number, since it is larger than the sum of its proper divisors (11009959631).

51250886065 is a wasteful number, since it uses less digits than its factorization.

51250886065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37400.

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 51250886065 in words is "fifty-one billion, two hundred fifty million, eight hundred eighty-six thousand, sixty-five".