11872689981794 has 8 divisors (see below), whose sum is σ = 18243401679468. Its totient is φ = 5791556088640.

The previous prime is 11872689981793. The next prime is 11872689981811. The reversal of 11872689981794 is 49718998627811.

It can be written as a sum of positive squares in 2 ways, for example, as 8277445473025 + 3595244508769 = 2877055^2 + 1896113^2 .

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

It is a super-2 number, since 2×11872689981794² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11872689981793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72394451027 + ... + 72394451190.

Almost surely, 2^{11872689981794} is an apocalyptic number.

11872689981794 is a deficient number, since it is larger than the sum of its proper divisors (6370711697674).

11872689981794 is a wasteful number, since it uses less digits than its factorization.

11872689981794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144788902260.

The product of its digits is 877879296, while the sum is 80.

The spelling of 11872689981794 in words is "eleven trillion, eight hundred seventy-two billion, six hundred eighty-nine million, nine hundred eighty-one thousand, seven hundred ninety-four".