821482207408 has 10 divisors (see below), whose sum is σ = 1591621776884. Its totient is φ = 410741103696.

The previous prime is 821482207387. The next prime is 821482207409. The reversal of 821482207408 is 804702284128.

821482207408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (821482207409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25671318966 + ... + 25671318997.

Almost surely, 2^821482207408 is an apocalyptic number.

It is an amenable number.

821482207408 is a deficient number, since it is larger than the sum of its proper divisors (770139569476).

821482207408 is a wasteful number, since it uses less digits than its factorization.

821482207408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51342637971 (or 51342637965 counting only the distinct ones).

The product of its (nonzero) digits is 458752, while the sum is 46.

The spelling of 821482207408 in words is "eight hundred twenty-one billion, four hundred eighty-two million, two hundred seven thousand, four hundred eight".