144035663661021 has 16 divisors (see below), whose sum is σ = 209848192200000. Its totient is φ = 87151936475520.

The previous prime is 144035663661011. The next prime is 144035663661037. The reversal of 144035663661021 is 120166366530441.

It is a happy number.

It is not a de Polignac number, because 144035663661021 - 2⁷ = 144035663660893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144035663661011) 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, 3560107896 + ... + 3560148353.

It is an arithmetic number, because the mean of its divisors is an integer number (13115512012500).

Almost surely, 2^{144035663661021} is an apocalyptic number.

144035663661021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144035663661021 is a deficient number, since it is larger than the sum of its proper divisors (65812528538979).

144035663661021 is a wasteful number, since it uses less digits than its factorization.

144035663661021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7120256876.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 144035663661021 in words is "one hundred forty-four trillion, thirty-five billion, six hundred sixty-three million, six hundred sixty-one thousand, twenty-one".