11810112981 has 8 divisors (see below), whose sum is σ = 15981844704. Its totient is φ = 7755894960.

The previous prime is 11810112971. The next prime is 11810112989. The reversal of 11810112981 is 18921101811.

It is a happy number.

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

It is not a de Polignac number, because 11810112981 - 2¹¹ = 11810110933 is a prime.

It is a super-2 number, since 2×11810112981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11810112989) 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 7 ways as a sum of consecutive naturals, for example, 29378190 + ... + 29378591.

It is an arithmetic number, because the mean of its divisors is an integer number (1997730588).

Almost surely, 2^11810112981 is an apocalyptic number.

It is an amenable number.

11810112981 is a deficient number, since it is larger than the sum of its proper divisors (4171731723).

11810112981 is an equidigital number, since it uses as much as digits as its factorization.

11810112981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58756851.

The product of its (nonzero) digits is 1152, while the sum is 33.

The spelling of 11810112981 in words is "eleven billion, eight hundred ten million, one hundred twelve thousand, nine hundred eighty-one".