71181072685 has 16 divisors (see below), whose sum is σ = 88185756672. Its totient is φ = 55099756800.

The previous prime is 71181072667. The next prime is 71181072707. The reversal of 71181072685 is 58627018117.

It is not a de Polignac number, because 71181072685 - 2⁵ = 71181072653 is a prime.

It is a Duffinian number.

It is a congruent 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, 1146357 + ... + 1206853.

It is an arithmetic number, because the mean of its divisors is an integer number (5511609792).

Almost surely, 2^71181072685 is an apocalyptic number.

It is an amenable number.

71181072685 is a deficient number, since it is larger than the sum of its proper divisors (17004683987).

71181072685 is a wasteful number, since it uses less digits than its factorization.

71181072685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68124.

The product of its (nonzero) digits is 188160, while the sum is 46.

The spelling of 71181072685 in words is "seventy-one billion, one hundred eighty-one million, seventy-two thousand, six hundred eighty-five".