144990645645 has 16 divisors (see below), whose sum is σ = 242071339392. Its totient is φ = 73966242240.

The previous prime is 144990645637. The next prime is 144990645649. The reversal of 144990645645 is 546546099441.

It is not a de Polignac number, because 144990645645 - 2³ = 144990645637 is a prime.

It is a super-3 number, since 3×144990645645³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144990645649) 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, 210131026 + ... + 210131715.

It is an arithmetic number, because the mean of its divisors is an integer number (15129458712).

Almost surely, 2^144990645645 is an apocalyptic number.

144990645645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144990645645 is a deficient number, since it is larger than the sum of its proper divisors (97080693747).

144990645645 is a wasteful number, since it uses less digits than its factorization.

144990645645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420262772.

The product of its (nonzero) digits is 18662400, while the sum is 57.

The spelling of 144990645645 in words is "one hundred forty-four billion, nine hundred ninety million, six hundred forty-five thousand, six hundred forty-five".