71442757139 has 12 divisors (see below), whose sum is σ = 79500310848. Its totient is φ = 63819821520.

The previous prime is 71442757073. The next prime is 71442757153. The reversal of 71442757139 is 93175724417.

It is not a de Polignac number, because 71442757139 - 2²⁸ = 71174321683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71442747139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2846819 + ... + 2871804.

It is an arithmetic number, because the mean of its divisors is an integer number (6625025904).

Almost surely, 2^71442757139 is an apocalyptic number.

71442757139 is a deficient number, since it is larger than the sum of its proper divisors (8057553709).

71442757139 is a wasteful number, since it uses less digits than its factorization.

71442757139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5718698 (or 5718667 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 50.

The spelling of 71442757139 in words is "seventy-one billion, four hundred forty-two million, seven hundred fifty-seven thousand, one hundred thirty-nine".