145442241549 has 24 divisors (see below), whose sum is σ = 237669929952. Its totient is φ = 88146811440.

The previous prime is 145442241547. The next prime is 145442241587. The reversal of 145442241549 is 945142244541.

145442241549 is a `hidden beast` number, since 1 + 4 + 5 + 44 + 22 + 41 + 549 = 666.

It is not a de Polignac number, because 145442241549 - 2¹ = 145442241547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145442241547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27203134 + ... + 27208479.

It is an arithmetic number, because the mean of its divisors is an integer number (9902913748).

Almost surely, 2^145442241549 is an apocalyptic number.

It is an amenable number.

145442241549 is a deficient number, since it is larger than the sum of its proper divisors (92227688403).

145442241549 is an equidigital number, since it uses as much as digits as its factorization.

145442241549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54411639 (or 54411627 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The spelling of 145442241549 in words is "one hundred forty-five billion, four hundred forty-two million, two hundred forty-one thousand, five hundred forty-nine".