28112647345 has 16 divisors (see below), whose sum is σ = 35206503552. Its totient is φ = 21509488000.

The previous prime is 28112647333. The next prime is 28112647411. The reversal of 28112647345 is 54374621182.

It is not a de Polignac number, because 28112647345 - 2⁷ = 28112647217 is a prime.

It is a Duffinian number.

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, 1485714 + ... + 1504516.

It is an arithmetic number, because the mean of its divisors is an integer number (2200406472).

Almost surely, 2^28112647345 is an apocalyptic number.

It is an amenable number.

28112647345 is a deficient number, since it is larger than the sum of its proper divisors (7093856207).

28112647345 is a wasteful number, since it uses less digits than its factorization.

28112647345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31832.

The product of its digits is 322560, while the sum is 43.

The spelling of 28112647345 in words is "twenty-eight billion, one hundred twelve million, six hundred forty-seven thousand, three hundred forty-five".