15045150221 has 4 divisors (see below), whose sum is σ = 15047660832. Its totient is φ = 15042639612.

The previous prime is 15045150191. The next prime is 15045150223. The reversal of 15045150221 is 12205154051.

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 a de Polignac number, because none of the positive numbers 2^k-15045150221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15045150223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246295 + ... + 1258308.

It is an arithmetic number, because the mean of its divisors is an integer number (3761915208).

Almost surely, 2^15045150221 is an apocalyptic number.

It is an amenable number.

15045150221 is a deficient number, since it is larger than the sum of its proper divisors (2510611).

15045150221 is an equidigital number, since it uses as much as digits as its factorization.

15045150221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510610.

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 15045150221 in words is "fifteen billion, forty-five million, one hundred fifty thousand, two hundred twenty-one".