28061577859 has 16 divisors (see below), whose sum is σ = 33414322176. Its totient is φ = 23059324800.

The previous prime is 28061577857. The next prime is 28061577871. The reversal of 28061577859 is 95877516082.

It is a cyclic number.

It is not a de Polignac number, because 28061577859 - 2¹ = 28061577857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28061577857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581062 + ... + 627499.

It is an arithmetic number, because the mean of its divisors is an integer number (2088395136).

Almost surely, 2^28061577859 is an apocalyptic number.

28061577859 is a deficient number, since it is larger than the sum of its proper divisors (5352744317).

28061577859 is a wasteful number, since it uses less digits than its factorization.

28061577859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208706.

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 28061577859 in words is "twenty-eight billion, sixty-one million, five hundred seventy-seven thousand, eight hundred fifty-nine".