71803258523 has 4 divisors (see below), whose sum is σ = 71827792800. Its totient is φ = 71778724248.

The previous prime is 71803258517. The next prime is 71803258543. The reversal of 71803258523 is 32585230817.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71803258523 - 2²² = 71799064219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71803258543) 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, 12262748 + ... + 12268601.

It is an arithmetic number, because the mean of its divisors is an integer number (17956948200).

Almost surely, 2^71803258523 is an apocalyptic number.

71803258523 is a deficient number, since it is larger than the sum of its proper divisors (24534277).

71803258523 is a wasteful number, since it uses less digits than its factorization.

71803258523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24534276.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 71803258523 in words is "seventy-one billion, eight hundred three million, two hundred fifty-eight thousand, five hundred twenty-three".