71782165442 has 16 divisors (see below), whose sum is σ = 116650158912. Its totient is φ = 32931843600.

The previous prime is 71782165417. The next prime is 71782165463. The reversal of 71782165442 is 24456128717.

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, 8261684 + ... + 8270367.

It is an arithmetic number, because the mean of its divisors is an integer number (7290634932).

Almost surely, 2^71782165442 is an apocalyptic number.

71782165442 is a deficient number, since it is larger than the sum of its proper divisors (44867993470).

71782165442 is a wasteful number, since it uses less digits than its factorization.

71782165442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16532233.

The product of its digits is 752640, while the sum is 47.

The spelling of 71782165442 in words is "seventy-one billion, seven hundred eighty-two million, one hundred sixty-five thousand, four hundred forty-two".