18745540070544 has 1215 divisors, whose sum is σ = 67053365076243. Its totient is φ = 5061281791104.

The previous prime is 18745540070531. The next prime is 18745540070549. The reversal of 18745540070544 is 44507004554781.

It is a happy number.

The square root of 18745540070544 is 4329612.

It is a perfect power (a square), and thus also a powerful number.

18745540070544 is a `hidden beast` number, since 1 + 8 + 7 + 4 + 55 + 40 + 0 + 7 + 0 + 544 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (18745540070549) by changing a digit.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 225849880327 + ... + 225849880409.

Almost surely, 2^{18745540070544} is an apocalyptic number.

18745540070544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18745540070544 is the 4329612-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18745540070544

18745540070544 is an abundant number, since it is smaller than the sum of its proper divisors (48307825005699).

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

18745540070544 is an frugal number, since it uses more digits than its factorization.

18745540070544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 12544000, while the sum is 54.

The spelling of 18745540070544 in words is "eighteen trillion, seven hundred forty-five billion, five hundred forty million, seventy thousand, five hundred forty-four".