71882660618 has 8 divisors (see below), whose sum is σ = 108059931012. Its totient is φ = 35862683616.

The previous prime is 71882660599. The next prime is 71882660623. The reversal of 71882660618 is 81606628817.

It can be written as a sum of positive squares in 2 ways, for example, as 69533998249 + 2348662369 = 263693^2 + 48463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71882660618.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39322205 + ... + 39324032.

Almost surely, 2^71882660618 is an apocalyptic number.

71882660618 is a deficient number, since it is larger than the sum of its proper divisors (36177270394).

71882660618 is a wasteful number, since it uses less digits than its factorization.

71882660618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78646696.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 71882660618 in words is "seventy-one billion, eight hundred eighty-two million, six hundred sixty thousand, six hundred eighteen".