10809253815 has 32 divisors (see below), whose sum is σ = 17938190016. Its totient is φ = 5553561600.

The previous prime is 10809253813. The next prime is 10809253823. The reversal of 10809253815 is 51835290801.

It is not a de Polignac number, because 10809253815 - 2¹ = 10809253813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10809253813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40362 + ... + 152471.

It is an arithmetic number, because the mean of its divisors is an integer number (560568438).

Almost surely, 2^10809253815 is an apocalyptic number.

10809253815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10809253815 is a deficient number, since it is larger than the sum of its proper divisors (7128936201).

10809253815 is a wasteful number, since it uses less digits than its factorization.

10809253815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192979.

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 10809253815 in words is "ten billion, eight hundred nine million, two hundred fifty-three thousand, eight hundred fifteen".