11991115003 has 8 divisors (see below), whose sum is σ = 13717667808. Its totient is φ = 10267946304.

The previous prime is 11991115001. The next prime is 11991115007. The reversal of 11991115003 is 30051119911.

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

It is not a de Polignac number, because 11991115003 - 2¹ = 11991115001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11991115001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838426 + ... + 852607.

It is an arithmetic number, because the mean of its divisors is an integer number (1714708476).

Almost surely, 2^11991115003 is an apocalyptic number.

11991115003 is a deficient number, since it is larger than the sum of its proper divisors (1726552805).

11991115003 is a wasteful number, since it uses less digits than its factorization.

11991115003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692053.

The product of its (nonzero) digits is 1215, while the sum is 31.

The spelling of 11991115003 in words is "eleven billion, nine hundred ninety-one million, one hundred fifteen thousand, three".