71829412493 has 4 divisors (see below), whose sum is σ = 71829949980. Its totient is φ = 71828875008.

The previous prime is 71829412481. The next prime is 71829412519. The reversal of 71829412493 is 39421492817.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39421492817 = 7 ⋅5631641831.

It can be written as a sum of positive squares in 2 ways, for example, as 20074072489 + 51755340004 = 141683^2 + 227498^2 .

It is a cyclic number.

It is not a de Polignac number, because 71829412493 - 2⁴ = 71829412477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71829412453) 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, 104621 + ... + 393197.

It is an arithmetic number, because the mean of its divisors is an integer number (17957487495).

Almost surely, 2^71829412493 is an apocalyptic number.

It is an amenable number.

71829412493 is a deficient number, since it is larger than the sum of its proper divisors (537487).

71829412493 is a wasteful number, since it uses less digits than its factorization.

71829412493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537486.

The product of its digits is 870912, while the sum is 50.

The spelling of 71829412493 in words is "seventy-one billion, eight hundred twenty-nine million, four hundred twelve thousand, four hundred ninety-three".