28515331245 has 32 divisors (see below), whose sum is σ = 47124946944. Its totient is φ = 14708635200.

The previous prime is 28515331237. The next prime is 28515331279. The reversal of 28515331245 is 54213351582.

It is not a de Polignac number, because 28515331245 - 2³ = 28515331237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 783400 + ... + 818990.

It is an arithmetic number, because the mean of its divisors is an integer number (1472654592).

Almost surely, 2^28515331245 is an apocalyptic number.

It is an amenable number.

28515331245 is a deficient number, since it is larger than the sum of its proper divisors (18609615699).

28515331245 is a wasteful number, since it uses less digits than its factorization.

28515331245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37353.

The product of its digits is 144000, while the sum is 39.

The spelling of 28515331245 in words is "twenty-eight billion, five hundred fifteen million, three hundred thirty-one thousand, two hundred forty-five".