15604223545 has 16 divisors (see below), whose sum is σ = 18792103680. Its totient is φ = 12438764800.

The previous prime is 15604223491. The next prime is 15604223597. The reversal of 15604223545 is 54532240651.

It is not a de Polignac number, because 15604223545 - 2¹⁹ = 15603699257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1894446 + ... + 1902664.

It is an arithmetic number, because the mean of its divisors is an integer number (1174506480).

Almost surely, 2^15604223545 is an apocalyptic number.

It is an amenable number.

15604223545 is a deficient number, since it is larger than the sum of its proper divisors (3187880135).

15604223545 is an equidigital number, since it uses as much as digits as its factorization.

15604223545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9536.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 15604223545 in words is "fifteen billion, six hundred four million, two hundred twenty-three thousand, five hundred forty-five".