15040340243 has 8 divisors (see below), whose sum is σ = 15216161040. Its totient is φ = 14864671360.

The previous prime is 15040340191. The next prime is 15040340281. The reversal of 15040340243 is 34204304051.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15040340243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15040340143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167648 + ... + 241218.

It is an arithmetic number, because the mean of its divisors is an integer number (1902020130).

Almost surely, 2^15040340243 is an apocalyptic number.

15040340243 is a deficient number, since it is larger than the sum of its proper divisors (175820797).

15040340243 is an equidigital number, since it uses as much as digits as its factorization.

15040340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75957.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 15040340243 its reverse (34204304051), we get a palindrome (49244644294).

The spelling of 15040340243 in words is "fifteen billion, forty million, three hundred forty thousand, two hundred forty-three".