71252747431 has 8 divisors (see below), whose sum is σ = 71931943440. Its totient is φ = 70574404992.

The previous prime is 71252747429. The next prime is 71252747483. The reversal of 71252747431 is 13474725217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71252747431 - 2¹ = 71252747429 is a prime.

It is a super-2 number, since 2×71252747431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71253747431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45016 + ... + 380173.

It is an arithmetic number, because the mean of its divisors is an integer number (8991492930).

Almost surely, 2^71252747431 is an apocalyptic number.

71252747431 is a deficient number, since it is larger than the sum of its proper divisors (679196009).

71252747431 is a wasteful number, since it uses less digits than its factorization.

71252747431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426785.

The product of its digits is 329280, while the sum is 43.

The spelling of 71252747431 in words is "seventy-one billion, two hundred fifty-two million, seven hundred forty-seven thousand, four hundred thirty-one".