15040340545 has 8 divisors (see below), whose sum is σ = 18065886696. Its totient is φ = 12020620416.

The previous prime is 15040340543. The next prime is 15040340611. The reversal of 15040340545 is 54504304051.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1083989776 + 13956350769 = 32924^2 + 118137^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 15040340545 - 2¹ = 15040340543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15040340543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450822 + ... + 1461151.

It is an arithmetic number, because the mean of its divisors is an integer number (2258235837).

Almost surely, 2^15040340545 is an apocalyptic number.

It is an amenable number.

15040340545 is a deficient number, since it is larger than the sum of its proper divisors (3025546151).

15040340545 is a wasteful number, since it uses less digits than its factorization.

15040340545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913011.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 15040340545 its reverse (54504304051), we get a palindrome (69544644596).

The spelling of 15040340545 in words is "fifteen billion, forty million, three hundred forty thousand, five hundred forty-five".