78324441983 has 32 divisors (see below), whose sum is σ = 86528563200. Its totient is φ = 70781571168.

The previous prime is 78324441973. The next prime is 78324441997. The reversal of 78324441983 is 38914442387.

It is a happy number.

It is not a de Polignac number, because 78324441983 - 2⁴ = 78324441967 is a prime.

It is a super-2 number, since 2×78324441983² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78324441913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16581260 + ... + 16585982.

It is an arithmetic number, because the mean of its divisors is an integer number (2704017600).

Almost surely, 2^78324441983 is an apocalyptic number.

78324441983 is a deficient number, since it is larger than the sum of its proper divisors (8204121217).

78324441983 is an equidigital number, since it uses as much as digits as its factorization.

78324441983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868 (or 4822 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 53.

The spelling of 78324441983 in words is "seventy-eight billion, three hundred twenty-four million, four hundred forty-one thousand, nine hundred eighty-three".