15213204243 has 16 divisors (see below), whose sum is σ = 22549140640. Its totient is φ = 10137159072.

The previous prime is 15213204173. The next prime is 15213204269. The reversal of 15213204243 is 34240231251.

15213204243 is a `hidden beast` number, since 1 + 5 + 213 + 20 + 424 + 3 = 666.

It is not a de Polignac number, because 15213204243 - 2¹² = 15213200147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15213204043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81796 + ... + 192657.

It is an arithmetic number, because the mean of its divisors is an integer number (1409321290).

Almost surely, 2^15213204243 is an apocalyptic number.

15213204243 is a deficient number, since it is larger than the sum of its proper divisors (7335936397).

15213204243 is a wasteful number, since it uses less digits than its factorization.

15213204243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276515 (or 276509 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 15213204243 its reverse (34240231251), we get a palindrome (49453435494).

The spelling of 15213204243 in words is "fifteen billion, two hundred thirteen million, two hundred four thousand, two hundred forty-three".