51205404112 has 20 divisors (see below), whose sum is σ = 99277235136. Its totient is φ = 25585472480.

The previous prime is 51205404109. The next prime is 51205404143. The reversal of 51205404112 is 21140450215.

51205404112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052314 + ... + 1099897.

Almost surely, 2^51205404112 is an apocalyptic number.

It is an amenable number.

51205404112 is a deficient number, since it is larger than the sum of its proper divisors (48071831024).

51205404112 is a wasteful number, since it uses less digits than its factorization.

51205404112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153706 (or 2153700 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 51205404112 its reverse (21140450215), we get a palindrome (72345854327).

The spelling of 51205404112 in words is "fifty-one billion, two hundred five million, four hundred four thousand, one hundred twelve".