11515320023015 has 16 divisors (see below), whose sum is σ = 13832064576000. Its totient is φ = 9203138899872.

The previous prime is 11515320022991. The next prime is 11515320023017. The reversal of 11515320023015 is 51032002351511.

It is a cyclic number.

It is not a de Polignac number, because 11515320023015 - 2⁶ = 11515320022951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515320023017) 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, 28573886 + ... + 28974084.

It is an arithmetic number, because the mean of its divisors is an integer number (864504036000).

Almost surely, 2^{11515320023015} is an apocalyptic number.

11515320023015 is a deficient number, since it is larger than the sum of its proper divisors (2316744552985).

11515320023015 is a wasteful number, since it uses less digits than its factorization.

11515320023015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405886.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 11515320023015 its reverse (51032002351511), we get a palindrome (62547322374526).

The spelling of 11515320023015 in words is "eleven trillion, five hundred fifteen billion, three hundred twenty million, twenty-three thousand, fifteen".