11538006291 has 24 divisors (see below), whose sum is σ = 20049336320. Its totient is φ = 6246138096.

The previous prime is 11538006257. The next prime is 11538006307. The reversal of 11538006291 is 19260083511.

It is not a de Polignac number, because 11538006291 - 2⁷ = 11538006163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11538006211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4818355 + ... + 4820748.

Almost surely, 2^11538006291 is an apocalyptic number.

11538006291 is a deficient number, since it is larger than the sum of its proper divisors (8511330029).

11538006291 is a wasteful number, since it uses less digits than its factorization.

11538006291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9639135 (or 9639132 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 11538006291 in words is "eleven billion, five hundred thirty-eight million, six thousand, two hundred ninety-one".