11715461981818 has 8 divisors (see below), whose sum is σ = 20083649111712. Its totient is φ = 5020912277916.

The previous prime is 11715461981809. The next prime is 11715461981843. The reversal of 11715461981818 is 81818916451711.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418409356480 + ... + 418409356507.

It is an arithmetic number, because the mean of its divisors is an integer number (2510456138964).

Almost surely, 2^{11715461981818} is an apocalyptic number.

11715461981818 is a deficient number, since it is larger than the sum of its proper divisors (8368187129894).

11715461981818 is an equidigital number, since it uses as much as digits as its factorization.

11715461981818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836818712996.

The product of its digits is 3870720, while the sum is 61.

The spelling of 11715461981818 in words is "eleven trillion, seven hundred fifteen billion, four hundred sixty-one million, nine hundred eighty-one thousand, eight hundred eighteen".