71545017730 has 16 divisors (see below), whose sum is σ = 128827256760. Its totient is φ = 28607734912.

The previous prime is 71545017683. The next prime is 71545017749. The reversal of 71545017730 is 3771054517.

It can be written as a sum of positive squares in 4 ways, for example, as 35881072929 + 35663944801 = 189423^2 + 188849^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1254739 + ... + 1310518.

Almost surely, 2^71545017730 is an apocalyptic number.

71545017730 is a deficient number, since it is larger than the sum of its proper divisors (57282239030).

71545017730 is a wasteful number, since it uses less digits than its factorization.

71545017730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568053.

The product of its (nonzero) digits is 102900, while the sum is 40.

The spelling of 71545017730 in words is "seventy-one billion, five hundred forty-five million, seventeen thousand, seven hundred thirty".