51283265280 has 432 divisors, whose sum is σ = 182428716960. Its totient is φ = 12204933120.

The previous prime is 51283265279. The next prime is 51283265317. The reversal of 51283265280 is 8256238215.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47972586 + ... + 47973654.

Almost surely, 2^51283265280 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 51283265280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91214358480).

51283265280 is an abundant number, since it is smaller than the sum of its proper divisors (131145451680).

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

51283265280 is a wasteful number, since it uses less digits than its factorization.

51283265280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 51283265280 in words is "fifty-one billion, two hundred eighty-three million, two hundred sixty-five thousand, two hundred eighty".