71771894706 has 16 divisors (see below), whose sum is σ = 147423351744. Its totient is φ = 23277371184.

The previous prime is 71771894693. The next prime is 71771894707. The reversal of 71771894706 is 60749817717.

It is not an unprimeable number, because it can be changed into a prime (71771894707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161648190 + ... + 161648633.

It is an arithmetic number, because the mean of its divisors is an integer number (9213959484).

Almost surely, 2^71771894706 is an apocalyptic number.

71771894706 is an abundant number, since it is smaller than the sum of its proper divisors (75651457038).

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

71771894706 is a wasteful number, since it uses less digits than its factorization.

71771894706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323296865.

The product of its (nonzero) digits is 4148928, while the sum is 57.

The spelling of 71771894706 in words is "seventy-one billion, seven hundred seventy-one million, eight hundred ninety-four thousand, seven hundred six".