71791017995 has 4 divisors (see below), whose sum is σ = 86149221600. Its totient is φ = 57432814392.

The previous prime is 71791017953. The next prime is 71791017997. The reversal of 71791017995 is 59971019717.

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

It is a cyclic number.

It is not a de Polignac number, because 71791017995 - 2⁶ = 71791017931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71791017995.

It is not an unprimeable number, because it can be changed into a prime (71791017997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7179101795 + ... + 7179101804.

It is an arithmetic number, because the mean of its divisors is an integer number (21537305400).

Almost surely, 2^71791017995 is an apocalyptic number.

71791017995 is a deficient number, since it is larger than the sum of its proper divisors (14358203605).

71791017995 is a wasteful number, since it uses less digits than its factorization.

71791017995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14358203604.

The product of its (nonzero) digits is 1250235, while the sum is 56.

The spelling of 71791017995 in words is "seventy-one billion, seven hundred ninety-one million, seventeen thousand, nine hundred ninety-five".