51115407682 has 16 divisors (see below), whose sum is σ = 77429806272. Its totient is φ = 25305551280.

The previous prime is 51115407661. The next prime is 51115407691. The reversal of 51115407682 is 28670451115.

It is a super-2 number, since 2×51115407682² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604832 + ... + 1636372.

It is an arithmetic number, because the mean of its divisors is an integer number (4839362892).

Almost surely, 2^51115407682 is an apocalyptic number.

51115407682 is a deficient number, since it is larger than the sum of its proper divisors (26314398590).

51115407682 is a wasteful number, since it uses less digits than its factorization.

51115407682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39513.

The product of its (nonzero) digits is 67200, while the sum is 40.

Adding to 51115407682 its reverse (28670451115), we get a palindrome (79785858797).

The spelling of 51115407682 in words is "fifty-one billion, one hundred fifteen million, four hundred seven thousand, six hundred eighty-two".