144653221136440 has 32 divisors (see below), whose sum is σ = 325470089936880. Its totient is φ = 57861227587072.

The previous prime is 144653221136419. The next prime is 144653221136507. The reversal of 144653221136440 is 44631122356441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73467459 + ... + 75410701.

Almost surely, 2^{144653221136440} is an apocalyptic number.

144653221136440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144653221136440 is an abundant number, since it is smaller than the sum of its proper divisors (180816868800440).

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

144653221136440 is a wasteful number, since it uses less digits than its factorization.

144653221136440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804231 (or 3804227 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 144653221136440 in words is "one hundred forty-four trillion, six hundred fifty-three billion, two hundred twenty-one million, one hundred thirty-six thousand, four hundred forty".