11997143084 has 6 divisors (see below), whose sum is σ = 20995000404. Its totient is φ = 5998571540.

The previous prime is 11997143063. The next prime is 11997143113. The reversal of 11997143084 is 48034179911.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1499642882 + ... + 1499642889.

It is an arithmetic number, because the mean of its divisors is an integer number (3499166734).

Almost surely, 2^11997143084 is an apocalyptic number.

It is an amenable number.

11997143084 is a deficient number, since it is larger than the sum of its proper divisors (8997857320).

11997143084 is a wasteful number, since it uses less digits than its factorization.

11997143084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999285775 (or 2999285773 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 11997143084 in words is "eleven billion, nine hundred ninety-seven million, one hundred forty-three thousand, eighty-four".