71224812579 has 4 divisors (see below), whose sum is σ = 94966416776. Its totient is φ = 47483208384.

The previous prime is 71224812559. The next prime is 71224812601. The reversal of 71224812579 is 97521842217.

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

It is not a de Polignac number, because 71224812579 - 2⁹ = 71224812067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71224812559) 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, 11870802094 + ... + 11870802099.

It is an arithmetic number, because the mean of its divisors is an integer number (23741604194).

Almost surely, 2^71224812579 is an apocalyptic number.

71224812579 is a deficient number, since it is larger than the sum of its proper divisors (23741604197).

71224812579 is a wasteful number, since it uses less digits than its factorization.

71224812579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23741604196.

The product of its digits is 564480, while the sum is 48.

The spelling of 71224812579 in words is "seventy-one billion, two hundred twenty-four million, eight hundred twelve thousand, five hundred seventy-nine".