83824315921 has 8 divisors (see below), whose sum is σ = 91618228224. Its totient is φ = 76348522560.

The previous prime is 83824315907. The next prime is 83824315997. The reversal of 83824315921 is 12951342838.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83824315921 is a prime.

It is a super-2 number, since 2×83824315921² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83824345921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79529185 + ... + 79530238.

It is an arithmetic number, because the mean of its divisors is an integer number (11452278528).

Almost surely, 2^83824315921 is an apocalyptic number.

It is an amenable number.

83824315921 is a deficient number, since it is larger than the sum of its proper divisors (7793912303).

83824315921 is a wasteful number, since it uses less digits than its factorization.

83824315921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159059471.

The product of its digits is 414720, while the sum is 46.

The spelling of 83824315921 in words is "eighty-three billion, eight hundred twenty-four million, three hundred fifteen thousand, nine hundred twenty-one".