51112421116 has 6 divisors (see below), whose sum is σ = 89446736960. Its totient is φ = 25556210556.

The previous prime is 51112421083. The next prime is 51112421137. The reversal of 51112421116 is 61112421115.

It is a happy number.

It is a super-2 number, since 2×51112421116² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6389052636 + ... + 6389052643.

Almost surely, 2^51112421116 is an apocalyptic number.

It is an amenable number.

51112421116 is a deficient number, since it is larger than the sum of its proper divisors (38334315844).

51112421116 is a wasteful number, since it uses less digits than its factorization.

51112421116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12778105283 (or 12778105281 counting only the distinct ones).

The product of its digits is 480, while the sum is 25.

Subtracting 51112421116 from its reverse (61112421115), we obtain a palindrome (9999999999).

The spelling of 51112421116 in words is "fifty-one billion, one hundred twelve million, four hundred twenty-one thousand, one hundred sixteen".