11874081281 has 4 divisors (see below), whose sum is σ = 11967578112. Its totient is φ = 11780584452.

The previous prime is 11874081259. The next prime is 11874081283. The reversal of 11874081281 is 18218047811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18218047811 = 101 ⋅180376711.

It is a cyclic number.

It is not a de Polignac number, because 11874081281 - 2¹⁴ = 11874064897 is a prime.

It is a super-2 number, since 2×11874081281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11874081283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46748225 + ... + 46748478.

It is an arithmetic number, because the mean of its divisors is an integer number (2991894528).

Almost surely, 2^11874081281 is an apocalyptic number.

It is an amenable number.

11874081281 is a deficient number, since it is larger than the sum of its proper divisors (93496831).

11874081281 is an equidigital number, since it uses as much as digits as its factorization.

11874081281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93496830.

The product of its (nonzero) digits is 28672, while the sum is 41.

The spelling of 11874081281 in words is "eleven billion, eight hundred seventy-four million, eighty-one thousand, two hundred eighty-one".