28635802057039 has 4 divisors (see below), whose sum is σ = 28635821901000. Its totient is φ = 28635782213080.

The previous prime is 28635802057013. The next prime is 28635802057067. The reversal of 28635802057039 is 93075020853682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28635802057039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28635802067039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7571857 + ... + 10705354.

It is an arithmetic number, because the mean of its divisors is an integer number (7158955475250).

Almost surely, 2^{28635802057039} is an apocalyptic number.

28635802057039 is a deficient number, since it is larger than the sum of its proper divisors (19843961).

28635802057039 is a wasteful number, since it uses less digits than its factorization.

28635802057039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19843960.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 28635802057039 in words is "twenty-eight trillion, six hundred thirty-five billion, eight hundred two million, fifty-seven thousand, thirty-nine".