84513231539 has 12 divisors (see below), whose sum is σ = 94070602080. Its totient is φ = 75857667600.

The previous prime is 84513231487. The next prime is 84513231581. The reversal of 84513231539 is 93513231548.

It is a de Polignac number, because none of the positive numbers 2^k-84513231539 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84513231539.

It is not an unprimeable number, because it can be changed into a prime (84513231239) 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 11 ways as a sum of consecutive naturals, for example, 4411052 + ... + 4430169.

It is an arithmetic number, because the mean of its divisors is an integer number (7839216840).

Almost surely, 2^84513231539 is an apocalyptic number.

84513231539 is a deficient number, since it is larger than the sum of its proper divisors (9557370541).

84513231539 is a wasteful number, since it uses less digits than its factorization.

84513231539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8841322 (or 8841311 counting only the distinct ones).

The product of its digits is 388800, while the sum is 44.

Subtracting 84513231539 from its reverse (93513231548), we obtain a palindrome (9000000009).

The spelling of 84513231539 in words is "eighty-four billion, five hundred thirteen million, two hundred thirty-one thousand, five hundred thirty-nine".