71825043013 has 4 divisors (see below), whose sum is σ = 71826083008. Its totient is φ = 71824003020.

The previous prime is 71825042983. The next prime is 71825043071. The reversal of 71825043013 is 31034052817.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31034052817 = 293 ⋅105918269.

It is a cyclic number.

It is not a de Polignac number, because 71825043013 - 2⁹ = 71825042501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71825043013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71825043083) 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, 408423 + ... + 557188.

It is an arithmetic number, because the mean of its divisors is an integer number (17956520752).

Almost surely, 2^71825043013 is an apocalyptic number.

It is an amenable number.

71825043013 is a deficient number, since it is larger than the sum of its proper divisors (1039995).

71825043013 is an equidigital number, since it uses as much as digits as its factorization.

71825043013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039994.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 71825043013 in words is "seventy-one billion, eight hundred twenty-five million, forty-three thousand, thirteen".