71914750521 has 4 divisors (see below), whose sum is σ = 95886334032. Its totient is φ = 47943167012.

The previous prime is 71914750489. The next prime is 71914750529. The reversal of 71914750521 is 12505741917.

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 71914750521 - 2⁵ = 71914750489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71914750529) 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, 11985791751 + ... + 11985791756.

It is an arithmetic number, because the mean of its divisors is an integer number (23971583508).

Almost surely, 2^71914750521 is an apocalyptic number.

It is an amenable number.

71914750521 is a deficient number, since it is larger than the sum of its proper divisors (23971583511).

71914750521 is a wasteful number, since it uses less digits than its factorization.

71914750521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23971583510.

The product of its (nonzero) digits is 88200, while the sum is 42.

The spelling of 71914750521 in words is "seventy-one billion, nine hundred fourteen million, seven hundred fifty thousand, five hundred twenty-one".