51208000312 has 64 divisors (see below), whose sum is σ = 111044736000. Its totient is φ = 21684744576.

The previous prime is 51208000307. The next prime is 51208000339. The reversal of 51208000312 is 21300080215.

51208000312 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 15 ways as a sum of consecutive naturals, for example, 2228739 + ... + 2251597.

It is an arithmetic number, because the mean of its divisors is an integer number (1735074000).

Almost surely, 2^51208000312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51208000312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55522368000).

51208000312 is an abundant number, since it is smaller than the sum of its proper divisors (59836735688).

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

51208000312 is a wasteful number, since it uses less digits than its factorization.

51208000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23348 (or 23344 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 51208000312 its reverse (21300080215), we get a palindrome (72508080527).

The spelling of 51208000312 in words is "fifty-one billion, two hundred eight million, three hundred twelve", and thus it is an aban number.