13453633621553 has 8 divisors (see below), whose sum is σ = 13622090601600. Its totient is φ = 13285904318208.

The previous prime is 13453633621481. The next prime is 13453633621591. The reversal of 13453633621553 is 35512633635431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13453633621553 - 2²⁴ = 13453616844337 is a prime.

It is a super-3 number, since 3×13453633621553³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13453633671553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181881968 + ... + 181955921.

It is an arithmetic number, because the mean of its divisors is an integer number (1702761325200).

Almost surely, 2^{13453633621553} is an apocalyptic number.

It is an amenable number.

13453633621553 is a deficient number, since it is larger than the sum of its proper divisors (168456980047).

13453633621553 is a wasteful number, since it uses less digits than its factorization.

13453633621553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363838351.

The product of its digits is 8748000, while the sum is 50.

The spelling of 13453633621553 in words is "thirteen trillion, four hundred fifty-three billion, six hundred thirty-three million, six hundred twenty-one thousand, five hundred fifty-three".