28757591011 has 2 divisors, whose sum is σ = 28757591012. Its totient is φ = 28757591010.

The previous prime is 28757590987. The next prime is 28757591053. The reversal of 28757591011 is 11019575782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28757591011 - 2²¹ = 28755493859 is a prime.

It is not a weakly prime, because it can be changed into another prime (28757598011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14378795505 + 14378795506.

It is an arithmetic number, because the mean of its divisors is an integer number (14378795506).

Almost surely, 2^28757591011 is an apocalyptic number.

28757591011 is a deficient number, since it is larger than the sum of its proper divisors (1).

28757591011 is an equidigital number, since it uses as much as digits as its factorization.

28757591011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 46.

The spelling of 28757591011 in words is "twenty-eight billion, seven hundred fifty-seven million, five hundred ninety-one thousand, eleven".