71442857945 has 16 divisors (see below), whose sum is σ = 89466429312. Its totient is φ = 54664705920.

The previous prime is 71442857939. The next prime is 71442857947. The reversal of 71442857945 is 54975824417.

It is not a de Polignac number, because 71442857945 - 2⁶ = 71442857881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71442857947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2066774 + ... + 2101056.

It is an arithmetic number, because the mean of its divisors is an integer number (5591651832).

Almost surely, 2^71442857945 is an apocalyptic number.

It is an amenable number.

71442857945 is a deficient number, since it is larger than the sum of its proper divisors (18023571367).

71442857945 is a wasteful number, since it uses less digits than its factorization.

71442857945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52432.

The product of its digits is 11289600, while the sum is 56.

The spelling of 71442857945 in words is "seventy-one billion, four hundred forty-two million, eight hundred fifty-seven thousand, nine hundred forty-five".