13554321421023 has 24 divisors (see below), whose sum is σ = 20110413284208. Its totient is φ = 8790767402112.

The previous prime is 13554321420979. The next prime is 13554321421027. The reversal of 13554321421023 is 32012412345531.

13554321421023 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 432 + 1 + 4 + 210 + 2 + 3 = 666.

It is not a de Polignac number, because 13554321421023 - 2²¹ = 13554319323871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13554321421027) 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, 438486 + ... + 5225027.

It is an arithmetic number, because the mean of its divisors is an integer number (837933886842).

Almost surely, 2^{13554321421023} is an apocalyptic number.

13554321421023 is a deficient number, since it is larger than the sum of its proper divisors (6556091863185).

13554321421023 is a wasteful number, since it uses less digits than its factorization.

13554321421023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670743 (or 5670740 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 13554321421023 its reverse (32012412345531), we get a palindrome (45566733766554).

The spelling of 13554321421023 in words is "thirteen trillion, five hundred fifty-four billion, three hundred twenty-one million, four hundred twenty-one thousand, twenty-three".