11811538754 has 8 divisors (see below), whose sum is σ = 17783172540. Its totient is φ = 5883814576.

The previous prime is 11811538733. The next prime is 11811538799. The reversal of 11811538754 is 45783511811.

It can be written as a sum of positive squares in 2 ways, for example, as 8830924729 + 2980614025 = 93973^2 + 54595^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10976729 + ... + 10977804.

Almost surely, 2^11811538754 is an apocalyptic number.

11811538754 is a deficient number, since it is larger than the sum of its proper divisors (5971633786).

11811538754 is a wasteful number, since it uses less digits than its factorization.

11811538754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21954804.

The product of its digits is 134400, while the sum is 44.

The spelling of 11811538754 in words is "eleven billion, eight hundred eleven million, five hundred thirty-eight thousand, seven hundred fifty-four".