144981690453 has 24 divisors (see below), whose sum is σ = 228604448800. Its totient is φ = 91567380528.

The previous prime is 144981690449. The next prime is 144981690463. The reversal of 144981690453 is 354096189441.

144981690453 is a `hidden beast` number, since 1 + 4 + 4 + 98 + 16 + 90 + 453 = 666.

It is not a de Polignac number, because 144981690453 - 2² = 144981690449 is a prime.

It is a super-2 number, since 2×144981690453² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 144981690453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144981690463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15696238 + ... + 15705471.

Almost surely, 2^144981690453 is an apocalyptic number.

It is an amenable number.

144981690453 is a deficient number, since it is larger than the sum of its proper divisors (83622758347).

144981690453 is an equidigital number, since it uses as much as digits as its factorization.

144981690453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31401743 (or 31401731 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 144981690453 in words is "one hundred forty-four billion, nine hundred eighty-one million, six hundred ninety thousand, four hundred fifty-three".