71580371363 has 4 divisors (see below), whose sum is σ = 71581221768. Its totient is φ = 71579520960.

The previous prime is 71580371351. The next prime is 71580371417. The reversal of 71580371363 is 36317308517.

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 71580371363 - 2¹⁶ = 71580305827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71580371663) 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, 283118 + ... + 472563.

It is an arithmetic number, because the mean of its divisors is an integer number (17895305442).

Almost surely, 2^71580371363 is an apocalyptic number.

71580371363 is a deficient number, since it is larger than the sum of its proper divisors (850405).

71580371363 is an equidigital number, since it uses as much as digits as its factorization.

71580371363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850404.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 71580371363 in words is "seventy-one billion, five hundred eighty million, three hundred seventy-one thousand, three hundred sixty-three".