8645023156 has 72 divisors (see below), whose sum is σ = 20033528256. Its totient is φ = 3221729280.

The previous prime is 8645023147. The next prime is 8645023171. The reversal of 8645023156 is 6513205468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37581 + ... + 136756.

It is an arithmetic number, because the mean of its divisors is an integer number (278243448).

Almost surely, 2^8645023156 is an apocalyptic number.

It is an amenable number.

8645023156 is an abundant number, since it is smaller than the sum of its proper divisors (11388505100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8645023156 is a wasteful number, since it uses less digits than its factorization.

8645023156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174389 (or 174380 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 8645023156 is about 92978.6166599611. The cubic root of 8645023156 is about 2052.3687198954.

The spelling of 8645023156 in words is "eight billion, six hundred forty-five million, twenty-three thousand, one hundred fifty-six".