83845311487 has 4 divisors (see below), whose sum is σ = 95823213136. Its totient is φ = 71867409840.

The previous prime is 83845311479. The next prime is 83845311497. The reversal of 83845311487 is 78411354838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83845311487 - 2³ = 83845311479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83845311457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5988950814 + ... + 5988950827.

It is an arithmetic number, because the mean of its divisors is an integer number (23955803284).

Almost surely, 2^83845311487 is an apocalyptic number.

83845311487 is a deficient number, since it is larger than the sum of its proper divisors (11977901649).

83845311487 is a wasteful number, since it uses less digits than its factorization.

83845311487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11977901648.

The product of its digits is 2580480, while the sum is 52.

The spelling of 83845311487 in words is "eighty-three billion, eight hundred forty-five million, three hundred eleven thousand, four hundred eighty-seven".