71442871573 has 4 divisors (see below), whose sum is σ = 71512983360. Its totient is φ = 71372759788.

The previous prime is 71442871537. The next prime is 71442871597. The reversal of 71442871573 is 37517824417.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37517824417 = 6389 ⋅5872253.

It is a cyclic number.

It is not a de Polignac number, because 71442871573 - 2²⁹ = 70906000661 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 (71442871523) 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, 35054365 + ... + 35056402.

It is an arithmetic number, because the mean of its divisors is an integer number (17878245840).

Almost surely, 2^71442871573 is an apocalyptic number.

It is an amenable number.

71442871573 is a deficient number, since it is larger than the sum of its proper divisors (70111787).

71442871573 is a wasteful number, since it uses less digits than its factorization.

71442871573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70111786.

The product of its digits is 1317120, while the sum is 49.

The spelling of 71442871573 in words is "seventy-one billion, four hundred forty-two million, eight hundred seventy-one thousand, five hundred seventy-three".