51275024880 has 240 divisors, whose sum is σ = 169357267584. Its totient is φ = 12830307840.

The previous prime is 51275024821. The next prime is 51275024947. The reversal of 51275024880 is 8842057215.

It is a tau number, because it is divible by the number of its divisors (240).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 9267715 + ... + 9273245.

Almost surely, 2^51275024880 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 51275024880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84678633792).

51275024880 is an abundant number, since it is smaller than the sum of its proper divisors (118082242704).

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

51275024880 is a wasteful number, since it uses less digits than its factorization.

51275024880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5692 (or 5667 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 42.

The spelling of 51275024880 in words is "fifty-one billion, two hundred seventy-five million, twenty-four thousand, eight hundred eighty".