145549275532218 has 24 divisors (see below), whose sum is σ = 329067927291168. Its totient is φ = 46407015386952.

The previous prime is 145549275532211. The next prime is 145549275532277. The reversal of 145549275532218 is 812235572945541.

145549275532218 is a `hidden beast` number, since 1 + 4 + 5 + 5 + 4 + 9 + 2 + 75 + 532 + 21 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (145549275532211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175784148780 + ... + 175784149607.

It is an arithmetic number, because the mean of its divisors is an integer number (13711163637132).

Almost surely, 2^{145549275532218} is an apocalyptic number.

145549275532218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145549275532218 is an abundant number, since it is smaller than the sum of its proper divisors (183518651758950).

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

145549275532218 is a wasteful number, since it uses less digits than its factorization.

145549275532218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351568298418 (or 351568298415 counting only the distinct ones).

The product of its digits is 120960000, while the sum is 63.

The spelling of 145549275532218 in words is "one hundred forty-five trillion, five hundred forty-nine billion, two hundred seventy-five million, five hundred thirty-two thousand, two hundred eighteen".