51366443120 has 160 divisors (see below), whose sum is σ = 123682083840. Its totient is φ = 19830988800.

The previous prime is 51366443081. The next prime is 51366443137. The reversal of 51366443120 is 2134466315.

It is a super-2 number, since 2×51366443120² (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 in 31 ways as a sum of consecutive naturals, for example, 69133469 + ... + 69134211.

It is an arithmetic number, because the mean of its divisors is an integer number (773013024).

Almost surely, 2^51366443120 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 51366443120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61841041920).

51366443120 is an abundant number, since it is smaller than the sum of its proper divisors (72315640720).

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

51366443120 is a wasteful number, since it uses less digits than its factorization.

51366443120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 51366443120 in words is "fifty-one billion, three hundred sixty-six million, four hundred forty-three thousand, one hundred twenty".