144001261022661 has 24 divisors (see below), whose sum is σ = 237816122735360. Its totient is φ = 82251904178016.

The previous prime is 144001261022621. The next prime is 144001261022669. The reversal of 144001261022661 is 166220162100441.

144001261022661 is a `hidden beast` number, since 1 + 4 + 4 + 0 + 0 + 12 + 610 + 2 + 26 + 6 + 1 = 666.

It is not a de Polignac number, because 144001261022661 - 2¹⁸ = 144001260760517 is a prime.

It is a super-2 number, since 2×144001261022661² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144001261022669) 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 23 ways as a sum of consecutive naturals, for example, 479441626 + ... + 479741883.

Almost surely, 2^{144001261022661} is an apocalyptic number.

It is an amenable number.

144001261022661 is a deficient number, since it is larger than the sum of its proper divisors (93814861712699).

144001261022661 is a wasteful number, since it uses less digits than its factorization.

144001261022661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959185905 (or 959185902 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 144001261022661 in words is "one hundred forty-four trillion, one billion, two hundred sixty-one million, twenty-two thousand, six hundred sixty-one".