11659020858 has 48 divisors (see below), whose sum is σ = 26149336200. Its totient is φ = 3749880960.

The previous prime is 11659020851. The next prime is 11659020881. The reversal of 11659020858 is 85802095611.

It is a happy number.

11659020858 is a `hidden beast` number, since 1 + 1 + 6 + 590 + 2 + 0 + 8 + 58 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7895566449 + 3763454409 = 88857^2 + 61347^2 .

It is not an unprimeable number, because it can be changed into a prime (11659020851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 902388 + ... + 915216.

Almost surely, 2^11659020858 is an apocalyptic number.

11659020858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11659020858 is an abundant number, since it is smaller than the sum of its proper divisors (14490315342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11659020858 is a wasteful number, since it uses less digits than its factorization.

11659020858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14607 (or 14604 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 11659020858 in words is "eleven billion, six hundred fifty-nine million, twenty thousand, eight hundred fifty-eight".