51322380480 has 504 divisors, whose sum is σ = 216167543280. Its totient is φ = 11112837120.

The previous prime is 51322380463. The next prime is 51322380509. The reversal of 51322380480 is 8408322315.

51322380480 is a `hidden beast` number, since 51 + 32 + 23 + 80 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2671710 + ... + 2690850.

Almost surely, 2^51322380480 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 51322380480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108083771640).

51322380480 is an abundant number, since it is smaller than the sum of its proper divisors (164845162800).

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

51322380480 is a wasteful number, since it uses less digits than its factorization.

51322380480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19197 (or 19177 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 51322380480 in words is "fifty-one billion, three hundred twenty-two million, three hundred eighty thousand, four hundred eighty".