8145800015 has 4 divisors (see below), whose sum is σ = 9774960024. Its totient is φ = 6516640008.

The previous prime is 8145799969. The next prime is 8145800029. The reversal of 8145800015 is 5100085418.

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 8145800015 - 2¹⁸ = 8145537871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 814579997 + ... + 814580006.

It is an arithmetic number, because the mean of its divisors is an integer number (2443740006).

Almost surely, 2^8145800015 is an apocalyptic number.

8145800015 is a deficient number, since it is larger than the sum of its proper divisors (1629160009).

8145800015 is a wasteful number, since it uses less digits than its factorization.

8145800015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629160008.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 8145800015 is about 90254.0858631896. The cubic root of 8145800015 is about 2012.0769283634.

The spelling of 8145800015 in words is "eight billion, one hundred forty-five million, eight hundred thousand, fifteen".