28059591907 has 4 divisors (see below), whose sum is σ = 28712140600. Its totient is φ = 27407043216.

The previous prime is 28059591881. The next prime is 28059591979. The reversal of 28059591907 is 70919595082.

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

It is a cyclic number.

It is not a de Polignac number, because 28059591907 - 2⁷ = 28059591779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28059591997) 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, 326274282 + ... + 326274367.

It is an arithmetic number, because the mean of its divisors is an integer number (7178035150).

Almost surely, 2^28059591907 is an apocalyptic number.

28059591907 is a deficient number, since it is larger than the sum of its proper divisors (652548693).

28059591907 is an equidigital number, since it uses as much as digits as its factorization.

28059591907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652548692.

The product of its (nonzero) digits is 2041200, while the sum is 55.

The spelling of 28059591907 in words is "twenty-eight billion, fifty-nine million, five hundred ninety-one thousand, nine hundred seven".