873232813440 has 1536 divisors, whose sum is σ = 3544684416000. Its totient is φ = 196278681600.

The previous prime is 873232813433. The next prime is 873232813457. The reversal of 873232813440 is 44318232378.

873232813440 is a `hidden beast` number, since 8 + 7 + 3 + 23 + 281 + 344 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8477988429 + ... + 8477988531.

It is an arithmetic number, because the mean of its divisors is an integer number (2307737250).

Almost surely, 2^873232813440 is an apocalyptic number.

873232813440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 873232813440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1772342208000).

873232813440 is an abundant number, since it is smaller than the sum of its proper divisors (2671451602560).

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

873232813440 is a wasteful number, since it uses less digits than its factorization.

873232813440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 873232813440 in words is "eight hundred seventy-three billion, two hundred thirty-two million, eight hundred thirteen thousand, four hundred forty".