13521450353542 has 4 divisors (see below), whose sum is σ = 20282175530316. Its totient is φ = 6760725176770.

The previous prime is 13521450353527. The next prime is 13521450353549. The reversal of 13521450353542 is 24535305412531.

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 (13521450353549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3380362588384 + ... + 3380362588387.

It is an arithmetic number, because the mean of its divisors is an integer number (5070543882579).

Almost surely, 2^{13521450353542} is an apocalyptic number.

13521450353542 is a deficient number, since it is larger than the sum of its proper divisors (6760725176774).

13521450353542 is an equidigital number, since it uses as much as digits as its factorization.

13521450353542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760725176773.

The product of its (nonzero) digits is 1080000, while the sum is 43.

The spelling of 13521450353542 in words is "thirteen trillion, five hundred twenty-one billion, four hundred fifty million, three hundred fifty-three thousand, five hundred forty-two".