82140160738 has 4 divisors (see below), whose sum is σ = 123210241110. Its totient is φ = 41070080368.

The previous prime is 82140160733. The next prime is 82140160747. The reversal of 82140160738 is 83706104128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59596039129 + 22544121609 = 244123^2 + 150147^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 82140160738.

It is not an unprimeable number, because it can be changed into a prime (82140160733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20535040183 + ... + 20535040186.

Almost surely, 2^82140160738 is an apocalyptic number.

82140160738 is a deficient number, since it is larger than the sum of its proper divisors (41070080372).

82140160738 is a wasteful number, since it uses less digits than its factorization.

82140160738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41070080371.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 82140160738 in words is "eighty-two billion, one hundred forty million, one hundred sixty thousand, seven hundred thirty-eight".