51250886066 has 24 divisors (see below), whose sum is σ = 78270521616. Its totient is φ = 25168697400.

The previous prime is 51250886041. The next prime is 51250886069. The reversal of 51250886066 is 66068805215.

It is a happy number.

It is a super-2 number, since 2×51250886066² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51250886066.

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 11 ways as a sum of consecutive naturals, for example, 3107141 + ... + 3123591.

It is an arithmetic number, because the mean of its divisors is an integer number (3261271734).

Almost surely, 2^51250886066 is an apocalyptic number.

51250886066 is a deficient number, since it is larger than the sum of its proper divisors (27019635550).

51250886066 is a wasteful number, since it uses less digits than its factorization.

51250886066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16934 (or 16867 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 51250886066 in words is "fifty-one billion, two hundred fifty million, eight hundred eighty-six thousand, sixty-six".