18193453173400 has 24 divisors (see below), whose sum is σ = 42299778628620. Its totient is φ = 7277381269280.

The previous prime is 18193453173391. The next prime is 18193453173403. The reversal of 18193453173400 is 437135439181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18193453173403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45483632734 + ... + 45483633133.

Almost surely, 2^{18193453173400} is an apocalyptic number.

18193453173400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18193453173400 is an abundant number, since it is smaller than the sum of its proper divisors (24106325455220).

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

18193453173400 is a wasteful number, since it uses less digits than its factorization.

18193453173400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90967265883 (or 90967265874 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 18193453173400 in words is "eighteen trillion, one hundred ninety-three billion, four hundred fifty-three million, one hundred seventy-three thousand, four hundred".