51389837060 has 48 divisors (see below), whose sum is σ = 110971631232. Its totient is φ = 19978233600.

The previous prime is 51389837053. The next prime is 51389837069. The reversal of 51389837060 is 6073898315.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51389837069) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 96515 + ... + 334805.

It is an arithmetic number, because the mean of its divisors is an integer number (2311908984).

Almost surely, 2^51389837060 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 51389837060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55485815616).

51389837060 is an abundant number, since it is smaller than the sum of its proper divisors (59581794172).

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

51389837060 is a wasteful number, since it uses less digits than its factorization.

51389837060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238604 (or 238602 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 51389837060 in words is "fifty-one billion, three hundred eighty-nine million, eight hundred thirty-seven thousand, sixty".