71531246706 has 32 divisors (see below), whose sum is σ = 151995579840. Its totient is φ = 22399344576.

The previous prime is 71531246659. The next prime is 71531246713. The reversal of 71531246706 is 60764213517.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5548956 + ... + 5561831.

It is an arithmetic number, because the mean of its divisors is an integer number (4749861870).

Almost surely, 2^71531246706 is an apocalyptic number.

71531246706 is an abundant number, since it is smaller than the sum of its proper divisors (80464333134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71531246706 is a wasteful number, since it uses less digits than its factorization.

71531246706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110858.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 71531246706 in words is "seventy-one billion, five hundred thirty-one million, two hundred forty-six thousand, seven hundred six".