11581874238 has 32 divisors (see below), whose sum is σ = 25328236032. Its totient is φ = 3501507200.

The previous prime is 11581874221. The next prime is 11581874309. The reversal of 11581874238 is 83247818511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175131 + ... + 232022.

It is an arithmetic number, because the mean of its divisors is an integer number (791507376).

Almost surely, 2^11581874238 is an apocalyptic number.

11581874238 is an abundant number, since it is smaller than the sum of its proper divisors (13746361794).

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

11581874238 is a wasteful number, since it uses less digits than its factorization.

11581874238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407600.

The product of its digits is 430080, while the sum is 48.

The spelling of 11581874238 in words is "eleven billion, five hundred eighty-one million, eight hundred seventy-four thousand, two hundred thirty-eight".