144881404992657 has 40 divisors (see below), whose sum is σ = 216986311989216. Its totient is φ = 96338647824768.

The previous prime is 144881404992563. The next prime is 144881404992677. The reversal of 144881404992657 is 756299404188441.

144881404992657 is a `hidden beast` number, since 1 + 4 + 4 + 8 + 81 + 4 + 0 + 499 + 2 + 6 + 57 = 666.

It is not a de Polignac number, because 144881404992657 - 2³⁶ = 144812685515921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144881404992677) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 49461478 + ... + 52308704.

Almost surely, 2^{144881404992657} is an apocalyptic number.

It is an amenable number.

144881404992657 is a deficient number, since it is larger than the sum of its proper divisors (72104906996559).

144881404992657 is an equidigital number, since it uses as much as digits as its factorization.

144881404992657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848859 (or 2848850 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 72.

The spelling of 144881404992657 in words is "one hundred forty-four trillion, eight hundred eighty-one billion, four hundred four million, nine hundred ninety-two thousand, six hundred fifty-seven".