11811973211724 has 48 divisors (see below), whose sum is σ = 31498768329728. Its totient is φ = 3374830942848.

The previous prime is 11811973211713. The next prime is 11811973211743. The reversal of 11811973211724 is 42711237911811.

It is a super-4 number, since 4×11811973211724⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24394344 + ... + 24873840.

Almost surely, 2^{11811973211724} is an apocalyptic number.

11811973211724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11811973211724 is an abundant number, since it is smaller than the sum of its proper divisors (19686795118004).

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

11811973211724 is a wasteful number, since it uses less digits than its factorization.

11811973211724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772774 (or 772772 counting only the distinct ones).

The product of its digits is 169344, while the sum is 48.

The spelling of 11811973211724 in words is "eleven trillion, eight hundred eleven billion, nine hundred seventy-three million, two hundred eleven thousand, seven hundred twenty-four".