15243450155 has 4 divisors (see below), whose sum is σ = 18292140192. Its totient is φ = 12194760120.

The previous prime is 15243450133. The next prime is 15243450161. The reversal of 15243450155 is 55105434251.

15243450155 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 not a de Polignac number, because 15243450155 - 2⁶ = 15243450091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1524345011 + ... + 1524345020.

It is an arithmetic number, because the mean of its divisors is an integer number (4573035048).

Almost surely, 2^15243450155 is an apocalyptic number.

15243450155 is a deficient number, since it is larger than the sum of its proper divisors (3048690037).

15243450155 is an equidigital number, since it uses as much as digits as its factorization.

15243450155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048690036.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 15243450155 in words is "fifteen billion, two hundred forty-three million, four hundred fifty thousand, one hundred fifty-five".