28032927664897 has 4 divisors (see below), whose sum is σ = 28055700150016. Its totient is φ = 28010155179780.

The previous prime is 28032927664853. The next prime is 28032927664981. The reversal of 28032927664897 is 79846672923082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28032927664897 - 2³¹ = 28030780181249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28032927664837) 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, 11386240713 + ... + 11386243174.

It is an arithmetic number, because the mean of its divisors is an integer number (7013925037504).

Almost surely, 2^{28032927664897} is an apocalyptic number.

It is an amenable number.

28032927664897 is a deficient number, since it is larger than the sum of its proper divisors (22772485119).

28032927664897 is a wasteful number, since it uses less digits than its factorization.

28032927664897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22772485118.

The product of its (nonzero) digits is 877879296, while the sum is 73.

The spelling of 28032927664897 in words is "twenty-eight trillion, thirty-two billion, nine hundred twenty-seven million, six hundred sixty-four thousand, eight hundred ninety-seven".