84513388331549 has 4 divisors (see below), whose sum is σ = 84513491506080. Its totient is φ = 84513285157020.

The previous prime is 84513388331509. The next prime is 84513388331623. The reversal of 84513388331549 is 94513388331548.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84513388331549 - 2⁸ = 84513388331293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84513388331509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50348657 + ... + 52000134.

It is an arithmetic number, because the mean of its divisors is an integer number (21128372876520).

Almost surely, 2^{84513388331549} is an apocalyptic number.

It is an amenable number.

84513388331549 is a deficient number, since it is larger than the sum of its proper divisors (103174531).

84513388331549 is a wasteful number, since it uses less digits than its factorization.

84513388331549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103174530.

The product of its digits is 149299200, while the sum is 65.

Subtracting 84513388331549 from its reverse (94513388331548), we obtain a palindrome (9999999999999).

The spelling of 84513388331549 in words is "eighty-four trillion, five hundred thirteen billion, three hundred eighty-eight million, three hundred thirty-one thousand, five hundred forty-nine".