15273280645 has 16 divisors (see below), whose sum is σ = 21373689600. Its totient is φ = 10473105552.

The previous prime is 15273280643. The next prime is 15273280651. The reversal of 15273280645 is 54608237251.

15273280645 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 15273280645 - 2¹ = 15273280643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15273280643) 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 15 ways as a sum of consecutive naturals, for example, 4451137 + ... + 4454566.

It is an arithmetic number, because the mean of its divisors is an integer number (1335855600).

Almost surely, 2^15273280645 is an apocalyptic number.

It is an amenable number.

15273280645 is a deficient number, since it is larger than the sum of its proper divisors (6100408955).

15273280645 is an frugal number, since it uses more digits than its factorization.

15273280645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8905729 (or 8905715 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 15273280645 in words is "fifteen billion, two hundred seventy-three million, two hundred eighty thousand, six hundred forty-five".