51205234120 has 32 divisors (see below), whose sum is σ = 115452345600. Its totient is φ = 20439325888.

The previous prime is 51205234117. The next prime is 51205234133. The reversal of 51205234120 is 2143250215.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317094 + ... + 1355413.

It is an arithmetic number, because the mean of its divisors is an integer number (3607885800).

Almost surely, 2^51205234120 is an apocalyptic number.

It is an amenable number.

51205234120 is an abundant number, since it is smaller than the sum of its proper divisors (64247111480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51205234120 is a wasteful number, since it uses less digits than its factorization.

51205234120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2672997 (or 2672993 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 51205234120 its reverse (2143250215), we get a palindrome (53348484335).

The spelling of 51205234120 in words is "fifty-one billion, two hundred five million, two hundred thirty-four thousand, one hundred twenty".