8145558523 has 4 divisors (see below), whose sum is σ = 8156671888. Its totient is φ = 8134445160.

The previous prime is 8145558521. The next prime is 8145558529. The reversal of 8145558523 is 3258555418.

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 8145558523 - 2¹ = 8145558521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8145558521) 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, 5555583 + ... + 5557048.

It is an arithmetic number, because the mean of its divisors is an integer number (2039167972).

Almost surely, 2^8145558523 is an apocalyptic number.

8145558523 is a deficient number, since it is larger than the sum of its proper divisors (11113365).

8145558523 is a wasteful number, since it uses less digits than its factorization.

8145558523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11113364.

The product of its digits is 960000, while the sum is 46.

The square root of 8145558523 is about 90252.7480080247. The cubic root of 8145558523 is about 2012.0570446900.

The spelling of 8145558523 in words is "eight billion, one hundred forty-five million, five hundred fifty-eight thousand, five hundred twenty-three".