16215130903 has 4 divisors (see below), whose sum is σ = 16250153248. Its totient is φ = 16180108560.

The previous prime is 16215130901. The next prime is 16215130931. The reversal of 16215130903 is 30903151261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30903151261 = 44549 ⋅693689.

It is a cyclic number.

It is not a de Polignac number, because 16215130903 - 2¹ = 16215130901 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 (16215130901) 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, 17510478 + ... + 17511403.

It is an arithmetic number, because the mean of its divisors is an integer number (4062538312).

Almost surely, 2^16215130903 is an apocalyptic number.

16215130903 is a deficient number, since it is larger than the sum of its proper divisors (35022345).

16215130903 is an equidigital number, since it uses as much as digits as its factorization.

16215130903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35022344.

The product of its (nonzero) digits is 4860, while the sum is 31.

The spelling of 16215130903 in words is "sixteen billion, two hundred fifteen million, one hundred thirty thousand, nine hundred three".