15132121603 has 4 divisors (see below), whose sum is σ = 15219590688. Its totient is φ = 15044652520.

The previous prime is 15132121591. The next prime is 15132121619. The reversal of 15132121603 is 30612123151.

It is a happy number.

15132121603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30612123151 = 1123 ⋅27259237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15132121603 is a prime.

It is a super-2 number, since 2×15132121603² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15132121633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43734283 + ... + 43734628.

It is an arithmetic number, because the mean of its divisors is an integer number (3804897672).

Almost surely, 2^15132121603 is an apocalyptic number.

15132121603 is a deficient number, since it is larger than the sum of its proper divisors (87469085).

15132121603 is an equidigital number, since it uses as much as digits as its factorization.

15132121603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87469084.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 15132121603 its reverse (30612123151), we get a palindrome (45744244754).

The spelling of 15132121603 in words is "fifteen billion, one hundred thirty-two million, one hundred twenty-one thousand, six hundred three".