11997073494 has 48 divisors (see below), whose sum is σ = 29871223200. Its totient is φ = 3408791040.

The previous prime is 11997073483. The next prime is 11997073559. The reversal of 11997073494 is 49437079911.

11997073494 is a `hidden beast` number, since 1 + 19 + 9 + 70 + 73 + 494 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 11997073494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240219 + ... + 285830.

It is an arithmetic number, because the mean of its divisors is an integer number (622317150).

Almost surely, 2^11997073494 is an apocalyptic number.

11997073494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11997073494 is an abundant number, since it is smaller than the sum of its proper divisors (17874149706).

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

11997073494 is a wasteful number, since it uses less digits than its factorization.

11997073494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526245 (or 526242 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 11997073494 in words is "eleven billion, nine hundred ninety-seven million, seventy-three thousand, four hundred ninety-four".