71871366923 has 4 divisors (see below), whose sum is σ = 72944073960. Its totient is φ = 70798659888.

The previous prime is 71871366821. The next prime is 71871366953. The reversal of 71871366923 is 32966317817.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71871366923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71871366953) 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 3 ways as a sum of consecutive naturals, for example, 536353418 + ... + 536353551.

It is an arithmetic number, because the mean of its divisors is an integer number (18236018490).

Almost surely, 2^71871366923 is an apocalyptic number.

71871366923 is a deficient number, since it is larger than the sum of its proper divisors (1072707037).

71871366923 is a wasteful number, since it uses less digits than its factorization.

71871366923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072707036.

The product of its digits is 2286144, while the sum is 53.

The spelling of 71871366923 in words is "seventy-one billion, eight hundred seventy-one million, three hundred sixty-six thousand, nine hundred twenty-three".