6545380563018 has 32 divisors (see below), whose sum is σ = 15867589245120. Its totient is φ = 1983448655280.

The previous prime is 6545380563011. The next prime is 6545380563031. The reversal of 6545380563018 is 8103650835456.

It is a happy number.

6545380563018 is a `hidden beast` number, since 6 + 5 + 45 + 38 + 0 + 563 + 0 + 1 + 8 = 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 (6545380563011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5509579005 + ... + 5509580192.

It is an arithmetic number, because the mean of its divisors is an integer number (495862163910).

Almost surely, 2^{6545380563018} is an apocalyptic number.

6545380563018 is an abundant number, since it is smaller than the sum of its proper divisors (9322208682102).

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

6545380563018 is a wasteful number, since it uses less digits than its factorization.

6545380563018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11019159219 (or 11019159213 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 6545380563018 in words is "six trillion, five hundred forty-five billion, three hundred eighty million, five hundred sixty-three thousand, eighteen".