71394162277818 has 16 divisors (see below), whose sum is σ = 142854954690816. Its totient is φ = 23786949070080.

The previous prime is 71394162277813. The next prime is 71394162277829. The reversal of 71394162277818 is 81877226149317.

It is a super-2 number, since 2×71394162277818² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71394162277813) 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, 2776241703 + ... + 2776267418.

It is an arithmetic number, because the mean of its divisors is an integer number (8928434668176).

Almost surely, 2^{71394162277818} is an apocalyptic number.

71394162277818 is an abundant number, since it is smaller than the sum of its proper divisors (71460792412998).

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

71394162277818 is a wasteful number, since it uses less digits than its factorization.

71394162277818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552511269.

The product of its digits is 56899584, while the sum is 66.

The spelling of 71394162277818 in words is "seventy-one trillion, three hundred ninety-four billion, one hundred sixty-two million, two hundred seventy-seven thousand, eight hundred eighteen".