20144453656353 has 16 divisors (see below), whose sum is σ = 28926023735616. Its totient is φ = 12396306415680.

The previous prime is 20144453656337. The next prime is 20144453656471. The reversal of 20144453656353 is 35365635444102.

It is not a de Polignac number, because 20144453656353 - 2⁴ = 20144453656337 is a prime.

It is a super-2 number, since 2×20144453656353² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20144453656296 and 20144453656305.

It is not an unprimeable number, because it can be changed into a prime (20144453651353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4090050 + ... + 7550987.

It is an arithmetic number, because the mean of its divisors is an integer number (1807876483476).

Almost surely, 2^{20144453656353} is an apocalyptic number.

It is an amenable number.

20144453656353 is a deficient number, since it is larger than the sum of its proper divisors (8781570079263).

20144453656353 is a wasteful number, since it uses less digits than its factorization.

20144453656353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11685424.

The product of its (nonzero) digits is 15552000, while the sum is 51.

The spelling of 20144453656353 in words is "twenty trillion, one hundred forty-four billion, four hundred fifty-three million, six hundred fifty-six thousand, three hundred fifty-three".