83816933621 has 8 divisors (see below), whose sum is σ = 88231990080. Its totient is φ = 79402241088.

The previous prime is 83816933609. The next prime is 83816933623. The reversal of 83816933621 is 12633961838.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83816933621 - 2¹⁰ = 83816932597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83816933621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83816933623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470765 + ... + 623901.

It is an arithmetic number, because the mean of its divisors is an integer number (11028998760).

Almost surely, 2^83816933621 is an apocalyptic number.

It is an amenable number.

83816933621 is a deficient number, since it is larger than the sum of its proper divisors (4415056459).

83816933621 is a wasteful number, since it uses less digits than its factorization.

83816933621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181963.

The product of its digits is 1119744, while the sum is 50.

The spelling of 83816933621 in words is "eighty-three billion, eight hundred sixteen million, nine hundred thirty-three thousand, six hundred twenty-one".