11819388972 has 36 divisors (see below), whose sum is σ = 28496931288. Its totient is φ = 3812702400.

The previous prime is 11819388943. The next prime is 11819388979. The reversal of 11819388972 is 27988391811.

It is not an unprimeable number, because it can be changed into a prime (11819388979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500929 + ... + 523992.

Almost surely, 2^11819388972 is an apocalyptic number.

11819388972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11819388972 is an abundant number, since it is smaller than the sum of its proper divisors (16677542316).

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

11819388972 is a wasteful number, since it uses less digits than its factorization.

11819388972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024990 (or 1024957 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 57.

The spelling of 11819388972 in words is "eleven billion, eight hundred nineteen million, three hundred eighty-eight thousand, nine hundred seventy-two".