82489553393 has 16 divisors (see below), whose sum is σ = 91250565840. Its totient is φ = 74074300416.

The previous prime is 82489553371. The next prime is 82489553423. The reversal of 82489553393 is 39335598428.

It can be written as a sum of positive squares in 8 ways, for example, as 1647710464 + 80841842929 = 40592^2 + 284327^2 .

It is a cyclic number.

It is not a de Polignac number, because 82489553393 - 2¹² = 82489549297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82489556393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4501193 + ... + 4519481.

It is an arithmetic number, because the mean of its divisors is an integer number (5703160365).

Almost surely, 2^82489553393 is an apocalyptic number.

It is an amenable number.

82489553393 is a deficient number, since it is larger than the sum of its proper divisors (8761012447).

82489553393 is a wasteful number, since it uses less digits than its factorization.

82489553393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27716.

The product of its digits is 27993600, while the sum is 59.

The spelling of 82489553393 in words is "eighty-two billion, four hundred eighty-nine million, five hundred fifty-three thousand, three hundred ninety-three".