15155442209 has 4 divisors (see below), whose sum is σ = 15190606080. Its totient is φ = 15120278340.

The previous prime is 15155442193. The next prime is 15155442259. The reversal of 15155442209 is 90224455151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15155442209 - 2⁴ = 15155442193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15155442259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17581289 + ... + 17582150.

It is an arithmetic number, because the mean of its divisors is an integer number (3797651520).

Almost surely, 2^15155442209 is an apocalyptic number.

It is an amenable number.

15155442209 is a deficient number, since it is larger than the sum of its proper divisors (35163871).

15155442209 is an equidigital number, since it uses as much as digits as its factorization.

15155442209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35163870.

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 15155442209 in words is "fifteen billion, one hundred fifty-five million, four hundred forty-two thousand, two hundred nine".