15243345122 has 4 divisors (see below), whose sum is σ = 22865017686. Its totient is φ = 7621672560.

The previous prime is 15243345113. The next prime is 15243345133. The reversal of 15243345122 is 22154334251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22154334251 = 7 ⋅3164904893.

It can be written as a sum of positive squares in only one way, i.e., 15232249561 + 11095561 = 123419^2 + 3331^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3810836279 + ... + 3810836282.

Almost surely, 2^15243345122 is an apocalyptic number.

15243345122 is a deficient number, since it is larger than the sum of its proper divisors (7621672564).

15243345122 is an equidigital number, since it uses as much as digits as its factorization.

15243345122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7621672563.

The product of its digits is 28800, while the sum is 32.

Adding to 15243345122 its reverse (22154334251), we get a palindrome (37397679373).

The spelling of 15243345122 in words is "fifteen billion, two hundred forty-three million, three hundred forty-five thousand, one hundred twenty-two".