15585072945 has 32 divisors (see below), whose sum is σ = 27034560000. Its totient is φ = 7621142784.

The previous prime is 15585072917. The next prime is 15585072977. The reversal of 15585072945 is 54927058551.

15585072945 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 15585072945 - 2⁸ = 15585072689 is a prime.

It is an unprimeable number.

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, 239145 + ... + 297254.

It is an arithmetic number, because the mean of its divisors is an integer number (844830000).

Almost surely, 2^15585072945 is an apocalyptic number.

15585072945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15585072945 is a deficient number, since it is larger than the sum of its proper divisors (11449487055).

15585072945 is a wasteful number, since it uses less digits than its factorization.

15585072945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536569.

The product of its (nonzero) digits is 2520000, while the sum is 51.

The spelling of 15585072945 in words is "fifteen billion, five hundred eighty-five million, seventy-two thousand, nine hundred forty-five".