82390813443 has 32 divisors (see below), whose sum is σ = 122684774400. Its totient is φ = 54646704000.

The previous prime is 82390813441. The next prime is 82390813451. The reversal of 82390813443 is 34431809328.

It is a Cunningham number, because it is equal to 287038²-1.

It is not a de Polignac number, because 82390813443 - 2¹ = 82390813441 is a prime.

It is a super-2 number, since 2×82390813443² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82390813441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7744738 + ... + 7755368.

It is an arithmetic number, because the mean of its divisors is an integer number (3833899200).

Almost surely, 2^82390813443 is an apocalyptic number.

82390813443 is a deficient number, since it is larger than the sum of its proper divisors (40293960957).

82390813443 is a wasteful number, since it uses less digits than its factorization.

82390813443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12080 (or 12074 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 82390813443 in words is "eighty-two billion, three hundred ninety million, eight hundred thirteen thousand, four hundred forty-three".