13542321503 has 4 divisors (see below), whose sum is σ = 13546412448. Its totient is φ = 13538230560.

The previous prime is 13542321479. The next prime is 13542321509. The reversal of 13542321503 is 30512324531.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13542321503 - 2²² = 13538127199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13542321509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040503 + ... + 2047128.

It is an arithmetic number, because the mean of its divisors is an integer number (3386603112).

Almost surely, 2^13542321503 is an apocalyptic number.

13542321503 is a deficient number, since it is larger than the sum of its proper divisors (4090945).

13542321503 is an equidigital number, since it uses as much as digits as its factorization.

13542321503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090944.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 13542321503 in words is "thirteen billion, five hundred forty-two million, three hundred twenty-one thousand, five hundred three".