71384303821823 has 4 divisors (see below), whose sum is σ = 71399698328040. Its totient is φ = 71368909315608.

The previous prime is 71384303821771. The next prime is 71384303821843. The reversal of 71384303821823 is 32812830348317.

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 71384303821823 - 2²⁶ = 71384236712959 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 (71384303821843) 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, 7697246153 + ... + 7697255426.

It is an arithmetic number, because the mean of its divisors is an integer number (17849924582010).

Almost surely, 2^{71384303821823} is an apocalyptic number.

71384303821823 is a deficient number, since it is larger than the sum of its proper divisors (15394506217).

71384303821823 is a wasteful number, since it uses less digits than its factorization.

71384303821823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15394506216.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 71384303821823 in words is "seventy-one trillion, three hundred eighty-four billion, three hundred three million, eight hundred twenty-one thousand, eight hundred twenty-three".