15221307045 has 32 divisors (see below), whose sum is σ = 28305008640. Its totient is φ = 6840371520.

The previous prime is 15221307041. The next prime is 15221307077. The reversal of 15221307045 is 54070312251.

15221307045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15221307045 - 2² = 15221307041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15221307041) 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 31 ways as a sum of consecutive naturals, for example, 1222321 + ... + 1234710.

It is an arithmetic number, because the mean of its divisors is an integer number (884531520).

Almost surely, 2^15221307045 is an apocalyptic number.

15221307045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15221307045 is a deficient number, since it is larger than the sum of its proper divisors (13083701595).

15221307045 is a wasteful number, since it uses less digits than its factorization.

15221307045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457105.

The product of its (nonzero) digits is 8400, while the sum is 30.

Adding to 15221307045 its reverse (54070312251), we get a palindrome (69291619296).

The spelling of 15221307045 in words is "fifteen billion, two hundred twenty-one million, three hundred seven thousand, forty-five".