71489345833 has 4 divisors (see below), whose sum is σ = 71490120660. Its totient is φ = 71488571008.

The previous prime is 71489345827. The next prime is 71489345887. The reversal of 71489345833 is 33854398417.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 45210666384 + 26278679449 = 212628^2 + 162107^2 .

It is a cyclic number.

It is not a de Polignac number, because 71489345833 - 2⁵ = 71489345801 is a prime.

It is a super-2 number, since 2×71489345833² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71489345813) 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, 226828 + ... + 440941.

It is an arithmetic number, because the mean of its divisors is an integer number (17872530165).

Almost surely, 2^71489345833 is an apocalyptic number.

It is an amenable number.

71489345833 is a deficient number, since it is larger than the sum of its proper divisors (774827).

71489345833 is a wasteful number, since it uses less digits than its factorization.

71489345833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774826.

The product of its digits is 8709120, while the sum is 55.

The spelling of 71489345833 in words is "seventy-one billion, four hundred eighty-nine million, three hundred forty-five thousand, eight hundred thirty-three".