13441551453421 has 32 divisors (see below), whose sum is σ = 16932180545280. Its totient is φ = 10385291073024.

The previous prime is 13441551453413. The next prime is 13441551453439. The reversal of 13441551453421 is 12435415514431.

It is not a de Polignac number, because 13441551453421 - 2³ = 13441551453413 is a prime.

It is a super-5 number, since 5×13441551453421⁵ (a number of 67 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13441551403421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16238145 + ... + 17045833.

It is an arithmetic number, because the mean of its divisors is an integer number (529130642040).

Almost surely, 2^{13441551453421} is an apocalyptic number.

It is an amenable number.

13441551453421 is a deficient number, since it is larger than the sum of its proper divisors (3490629091859).

13441551453421 is a wasteful number, since it uses less digits than its factorization.

13441551453421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812005.

The product of its digits is 576000, while the sum is 43.

Adding to 13441551453421 its reverse (12435415514431), we get a palindrome (25876966967852).

The spelling of 13441551453421 in words is "thirteen trillion, four hundred forty-one billion, five hundred fifty-one million, four hundred fifty-three thousand, four hundred twenty-one".