8231634456221 has 64 divisors (see below), whose sum is σ = 9500198400000. Its totient is φ = 7065592934400.

The previous prime is 8231634456217. The next prime is 8231634456229. The reversal of 8231634456221 is 1226544361328.

It is not a de Polignac number, because 8231634456221 - 2² = 8231634456217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8231634456229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2471218526 + ... + 2471221856.

It is an arithmetic number, because the mean of its divisors is an integer number (148440600000).

Almost surely, 2^{8231634456221} is an apocalyptic number.

It is an amenable number.

8231634456221 is a deficient number, since it is larger than the sum of its proper divisors (1268563943779).

8231634456221 is a wasteful number, since it uses less digits than its factorization.

8231634456221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770.

The product of its digits is 1658880, while the sum is 47.

The spelling of 8231634456221 in words is "eight trillion, two hundred thirty-one billion, six hundred thirty-four million, four hundred fifty-six thousand, two hundred twenty-one".