28545461515 has 32 divisors (see below), whose sum is σ = 37154847744. Its totient is φ = 20971230720.

The previous prime is 28545461513. The next prime is 28545461519. The reversal of 28545461515 is 51516454582.

It is not a de Polignac number, because 28545461515 - 2¹ = 28545461513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28545461513) 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, 1311552 + ... + 1333138.

It is an arithmetic number, because the mean of its divisors is an integer number (1161088992).

Almost surely, 2^28545461515 is an apocalyptic number.

28545461515 is a deficient number, since it is larger than the sum of its proper divisors (8609386229).

28545461515 is a wasteful number, since it uses less digits than its factorization.

28545461515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21987.

The product of its digits is 960000, while the sum is 46.

The spelling of 28545461515 in words is "twenty-eight billion, five hundred forty-five million, four hundred sixty-one thousand, five hundred fifteen".