51501021116 has 24 divisors (see below), whose sum is σ = 91046108160. Its totient is φ = 25489139312.

The previous prime is 51501021097. The next prime is 51501021133. The reversal of 51501021116 is 61112010515.

It is a junction number, because it is equal to n+sod(n) for n = 51501021091 and 51501021100.

It is a congruent number.

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, 1640 + ... + 320943.

It is an arithmetic number, because the mean of its divisors is an integer number (3793587840).

Almost surely, 2^51501021116 is an apocalyptic number.

It is an amenable number.

51501021116 is a deficient number, since it is larger than the sum of its proper divisors (39545087044).

51501021116 is a wasteful number, since it uses less digits than its factorization.

51501021116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322993 (or 322991 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 23.

The spelling of 51501021116 in words is "fifty-one billion, five hundred one million, twenty-one thousand, one hundred sixteen".