51286770432 has 144 divisors (see below), whose sum is σ = 158258580480. Its totient is φ = 16352252928.

The previous prime is 51286770421. The next prime is 51286770443. The reversal of 51286770432 is 23407768215.

51286770432 is a `hidden beast` number, since 512 + 8 + 67 + 70 + 4 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (51286770421) and next prime (51286770443).

It is a tau number, because it is divible by the number of its divisors (144).

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, 2328 + ... + 320279.

It is an arithmetic number, because the mean of its divisors is an integer number (1099017920).

Almost surely, 2^51286770432 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 51286770432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79129290240).

51286770432 is an abundant number, since it is smaller than the sum of its proper divisors (106971810048).

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

51286770432 is a wasteful number, since it uses less digits than its factorization.

51286770432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322655 (or 322635 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 51286770432 in words is "fifty-one billion, two hundred eighty-six million, seven hundred seventy thousand, four hundred thirty-two".