51533380032 has 112 divisors (see below), whose sum is σ = 144608885280. Its totient is φ = 16140500992.

The previous prime is 51533380001. The next prime is 51533380079. The reversal of 51533380032 is 23008333515.

It is a junction number, because it is equal to n+sod(n) for n = 51533379975 and 51533380002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2001094 + ... + 2026682.

Almost surely, 2^51533380032 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 51533380032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72304442640).

51533380032 is an abundant number, since it is smaller than the sum of its proper divisors (93075505248).

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

51533380032 is a wasteful number, since it uses less digits than its factorization.

51533380032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26238 (or 26228 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The spelling of 51533380032 in words is "fifty-one billion, five hundred thirty-three million, three hundred eighty thousand, thirty-two".