71213643423 has 48 divisors (see below), whose sum is σ = 114930475296. Its totient is φ = 43804385280.

The previous prime is 71213643421. The next prime is 71213643427. The reversal of 71213643423 is 32434631217.

71213643423 is a `hidden beast` number, since 7 + 1 + 2 + 1 + 3 + 643 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 71213643423 - 2¹ = 71213643421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71213643421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10917403 + ... + 10923923.

It is an arithmetic number, because the mean of its divisors is an integer number (2394384902).

Almost surely, 2^71213643423 is an apocalyptic number.

71213643423 is a deficient number, since it is larger than the sum of its proper divisors (43716831873).

71213643423 is a wasteful number, since it uses less digits than its factorization.

71213643423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006 (or 9994 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The spelling of 71213643423 in words is "seventy-one billion, two hundred thirteen million, six hundred forty-three thousand, four hundred twenty-three".