653459868449 has 16 divisors (see below), whose sum is σ = 667340985600. Its totient is φ = 639711683520.

The previous prime is 653459868437. The next prime is 653459868517. The reversal of 653459868449 is 944868954356.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 653459868449 - 2²⁴ = 653443091233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653459861449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36626159 + ... + 36643995.

It is an arithmetic number, because the mean of its divisors is an integer number (41708811600).

Almost surely, 2^653459868449 is an apocalyptic number.

It is an amenable number.

653459868449 is a deficient number, since it is larger than the sum of its proper divisors (13881117151).

653459868449 is a wasteful number, since it uses less digits than its factorization.

653459868449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21520.

The product of its digits is 895795200, while the sum is 71.

The spelling of 653459868449 in words is "six hundred fifty-three billion, four hundred fifty-nine million, eight hundred sixty-eight thousand, four hundred forty-nine".