11355800238 has 32 divisors (see below), whose sum is σ = 25427761920. Its totient is φ = 3756369240.

The previous prime is 11355800231. The next prime is 11355800263. The reversal of 11355800238 is 83200855311.

11355800238 is a `hidden beast` number, since 11 + 35 + 580 + 0 + 2 + 38 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11355800231) 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, 795570 + ... + 809717.

It is an arithmetic number, because the mean of its divisors is an integer number (794617560).

Almost surely, 2^11355800238 is an apocalyptic number.

11355800238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11355800238 is an abundant number, since it is smaller than the sum of its proper divisors (14071961682).

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

11355800238 is a wasteful number, since it uses less digits than its factorization.

11355800238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605429 (or 1605423 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 11355800238 in words is "eleven billion, three hundred fifty-five million, eight hundred thousand, two hundred thirty-eight".