13521231454 has 4 divisors (see below), whose sum is σ = 20281847184. Its totient is φ = 6760615726.

The previous prime is 13521231439. The next prime is 13521231457. The reversal of 13521231454 is 45413212531.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521231457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3380307862 + ... + 3380307865.

It is an arithmetic number, because the mean of its divisors is an integer number (5070461796).

Almost surely, 2^13521231454 is an apocalyptic number.

13521231454 is a deficient number, since it is larger than the sum of its proper divisors (6760615730).

13521231454 is an equidigital number, since it uses as much as digits as its factorization.

13521231454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760615729.

The product of its digits is 14400, while the sum is 31.

Adding to 13521231454 its reverse (45413212531), we get a palindrome (58934443985).

The spelling of 13521231454 in words is "thirteen billion, five hundred twenty-one million, two hundred thirty-one thousand, four hundred fifty-four".