810113505 has 8 divisors (see below), whose sum is σ = 1296181632. Its totient is φ = 432060528.

The previous prime is 810113503. The next prime is 810113509. The reversal of 810113505 is 505311018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 810113505 - 2¹ = 810113503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (810113503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 27003769 + ... + 27003798.

It is an arithmetic number, because the mean of its divisors is an integer number (162022704).

Almost surely, 2^810113505 is an apocalyptic number.

It is an amenable number.

810113505 is a deficient number, since it is larger than the sum of its proper divisors (486068127).

810113505 is a wasteful number, since it uses less digits than its factorization.

810113505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54007575.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 810113505 is about 28462.4929512508. The cubic root of 810113505 is about 932.2132912865.

The spelling of 810113505 in words is "eight hundred ten million, one hundred thirteen thousand, five hundred five".