71253310641 has 4 divisors (see below), whose sum is σ = 95004414192. Its totient is φ = 47502207092.

The previous prime is 71253310631. The next prime is 71253310649. The reversal of 71253310641 is 14601335217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71253310641 - 2⁹ = 71253310129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71253310649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11875551771 + ... + 11875551776.

It is an arithmetic number, because the mean of its divisors is an integer number (23751103548).

Almost surely, 2^71253310641 is an apocalyptic number.

It is an amenable number.

71253310641 is a deficient number, since it is larger than the sum of its proper divisors (23751103551).

71253310641 is a wasteful number, since it uses less digits than its factorization.

71253310641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23751103550.

The product of its (nonzero) digits is 15120, while the sum is 33.

Adding to 71253310641 its reverse (14601335217), we get a palindrome (85854645858).

The spelling of 71253310641 in words is "seventy-one billion, two hundred fifty-three million, three hundred ten thousand, six hundred forty-one".