28335845861647 has 2 divisors, whose sum is σ = 28335845861648. Its totient is φ = 28335845861646.

The previous prime is 28335845861641. The next prime is 28335845861663. The reversal of 28335845861647 is 74616854853382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28335845861647 - 2¹¹ = 28335845859599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28335845861641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14167922930823 + 14167922930824.

It is an arithmetic number, because the mean of its divisors is an integer number (14167922930824).

Almost surely, 2^{28335845861647} is an apocalyptic number.

28335845861647 is a deficient number, since it is larger than the sum of its proper divisors (1).

28335845861647 is an equidigital number, since it uses as much as digits as its factorization.

28335845861647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 928972800, while the sum is 70.

The spelling of 28335845861647 in words is "twenty-eight trillion, three hundred thirty-five billion, eight hundred forty-five million, eight hundred sixty-one thousand, six hundred forty-seven".