18505463485500 has 96 divisors (see below), whose sum is σ = 59875455232320. Its totient is φ = 4934790259200.

The previous prime is 18505463485423. The next prime is 18505463485507. The reversal of 18505463485500 is 558436450581.

18505463485500 is a `hidden beast` number, since 1 + 8 + 5 + 0 + 5 + 46 + 3 + 48 + 550 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18505463485507) 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, 685374037 + ... + 685401036.

It is an arithmetic number, because the mean of its divisors is an integer number (623702658670).

Almost surely, 2^{18505463485500} is an apocalyptic number.

18505463485500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18505463485500 is an abundant number, since it is smaller than the sum of its proper divisors (41369991746820).

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

18505463485500 is a wasteful number, since it uses less digits than its factorization.

18505463485500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370775101 (or 1370775083 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 54.

The spelling of 18505463485500 in words is "eighteen trillion, five hundred five billion, four hundred sixty-three million, four hundred eighty-five thousand, five hundred".