18155200602195 has 12 divisors (see below), whose sum is σ = 31469014377216. Its totient is φ = 9682773654480.

The previous prime is 18155200602193. The next prime is 18155200602223. The reversal of 18155200602195 is 59120600255181.

18155200602195 is a `hidden beast` number, since 1 + 8 + 1 + 5 + 5 + 20 + 0 + 602 + 19 + 5 = 666.

It is not a de Polignac number, because 18155200602195 - 2¹ = 18155200602193 is a prime.

It is a super-2 number, since 2×18155200602195² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 403448902271 = 18155200602195 / (1 + 8 + 1 + 5 + 5 + 2 + 0 + 0 + 6 + 0 + 2 + 1 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 18155200602195.

It is not an unprimeable number, because it can be changed into a prime (18155200602193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201724451091 + ... + 201724451180.

It is an arithmetic number, because the mean of its divisors is an integer number (2622417864768).

Almost surely, 2^{18155200602195} is an apocalyptic number.

18155200602195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18155200602195 is a deficient number, since it is larger than the sum of its proper divisors (13313813775021).

18155200602195 is a wasteful number, since it uses less digits than its factorization.

18155200602195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403448902282 (or 403448902279 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 45.

The spelling of 18155200602195 in words is "eighteen trillion, one hundred fifty-five billion, two hundred million, six hundred two thousand, one hundred ninety-five".