18661441182150 has 96 divisors (see below), whose sum is σ = 52463582115840. Its totient is φ = 4351817854080.

The previous prime is 18661441182149. The next prime is 18661441182151. The reversal of 18661441182150 is 5128114416681.

It is an interprime number because it is at equal distance from previous prime (18661441182149) and next prime (18661441182151).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18661441182150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18661441182151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251804262 + ... + 251878361.

It is an arithmetic number, because the mean of its divisors is an integer number (546495647040).

Almost surely, 2^{18661441182150} is an apocalyptic number.

18661441182150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18661441182150 is an abundant number, since it is smaller than the sum of its proper divisors (33802140933690).

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

18661441182150 is a wasteful number, since it uses less digits than its factorization.

18661441182150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503682670 (or 503682665 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 48.

The spelling of 18661441182150 in words is "eighteen trillion, six hundred sixty-one billion, four hundred forty-one million, one hundred eighty-two thousand, one hundred fifty".