821713887282 has 32 divisors (see below), whose sum is σ = 1662716590272. Its totient is φ = 270707442944.

The previous prime is 821713887263. The next prime is 821713887329. The reversal of 821713887282 is 282788317128.

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, 2015283 + ... + 2388470.

It is an arithmetic number, because the mean of its divisors is an integer number (51959893446).

Almost surely, 2^821713887282 is an apocalyptic number.

821713887282 is an abundant number, since it is smaller than the sum of its proper divisors (841002702990).

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

821713887282 is a wasteful number, since it uses less digits than its factorization.

821713887282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404122.

The product of its digits is 4816896, while the sum is 57.

The spelling of 821713887282 in words is "eight hundred twenty-one billion, seven hundred thirteen million, eight hundred eighty-seven thousand, two hundred eighty-two".