71342998321 has 4 divisors (see below), whose sum is σ = 81534855232. Its totient is φ = 61151141412.

The previous prime is 71342998273. The next prime is 71342998343. The reversal of 71342998321 is 12389924317.

It is a happy number.

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 71342998321 - 2¹⁹ = 71342474033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71342998121) 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, 5095928445 + ... + 5095928458.

It is an arithmetic number, because the mean of its divisors is an integer number (20383713808).

Almost surely, 2^71342998321 is an apocalyptic number.

It is an amenable number.

71342998321 is a deficient number, since it is larger than the sum of its proper divisors (10191856911).

71342998321 is a wasteful number, since it uses less digits than its factorization.

71342998321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191856910.

The product of its digits is 653184, while the sum is 49.

The spelling of 71342998321 in words is "seventy-one billion, three hundred forty-two million, nine hundred ninety-eight thousand, three hundred twenty-one".