15011513123 has 4 divisors (see below), whose sum is σ = 15027672840. Its totient is φ = 14995353408.

The previous prime is 15011513117. The next prime is 15011513161. The reversal of 15011513123 is 32131511051.

15011513123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15011513123 - 2⁶ = 15011513059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15011513113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8078465 + ... + 8080322.

It is an arithmetic number, because the mean of its divisors is an integer number (3756918210).

Almost surely, 2^15011513123 is an apocalyptic number.

15011513123 is a deficient number, since it is larger than the sum of its proper divisors (16159717).

15011513123 is an equidigital number, since it uses as much as digits as its factorization.

15011513123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16159716.

The product of its (nonzero) digits is 450, while the sum is 23.

The spelling of 15011513123 in words is "fifteen billion, eleven million, five hundred thirteen thousand, one hundred twenty-three".