8408900021870 has 32 divisors (see below), whose sum is σ = 15149536380000. Its totient is φ = 3360557402496.

The previous prime is 8408900021857. The next prime is 8408900021911. The reversal of 8408900021870 is 781200098048.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68848016 + ... + 68970044.

It is an arithmetic number, because the mean of its divisors is an integer number (473423011875).

Almost surely, 2^{8408900021870} is an apocalyptic number.

8408900021870 is a deficient number, since it is larger than the sum of its proper divisors (6740636358130).

8408900021870 is a wasteful number, since it uses less digits than its factorization.

8408900021870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128132.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 8408900021870 in words is "eight trillion, four hundred eight billion, nine hundred million, twenty-one thousand, eight hundred seventy".