7850321280 has 256 divisors, whose sum is σ = 27999000000. Its totient is φ = 2078687232.

The previous prime is 7850321279. The next prime is 7850321293. The reversal of 7850321280 is 821230587.

7850321280 is a `hidden beast` number, since 7 + 8 + 50 + 321 + 280 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2573196 + ... + 2576244.

Almost surely, 2^7850321280 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 7850321280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13999500000).

7850321280 is an abundant number, since it is smaller than the sum of its proper divisors (20148678720).

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

7850321280 is a wasteful number, since it uses less digits than its factorization.

7850321280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226 (or 3208 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 7850321280 is about 88602.0388027273. The cubic root of 7850321280 is about 1987.4481638314.

The spelling of 7850321280 in words is "seven billion, eight hundred fifty million, three hundred twenty-one thousand, two hundred eighty".