8231621343903 has 10 divisors (see below), whose sum is σ = 12296619538544. Its totient is φ = 5487747562548.

The previous prime is 8231621343839. The next prime is 8231621343947. The reversal of 8231621343903 is 3093431261328.

8231621343903 is a `hidden beast` number, since 8 + 231 + 6 + 21 + 3 + 4 + 390 + 3 = 666.

It is not a de Polignac number, because 8231621343903 - 2⁶ = 8231621343839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8231621341903) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50812477351 + ... + 50812477512.

Almost surely, 2^{8231621343903} is an apocalyptic number.

8231621343903 is a deficient number, since it is larger than the sum of its proper divisors (4064998194641).

8231621343903 is a wasteful number, since it uses less digits than its factorization.

8231621343903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101624954875 (or 101624954866 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 8231621343903 in words is "eight trillion, two hundred thirty-one billion, six hundred twenty-one million, three hundred forty-three thousand, nine hundred three".