18121618795874 has 96 divisors (see below), whose sum is σ = 31475812515840. Its totient is φ = 7808534316000.

The previous prime is 18121618795823. The next prime is 18121618795963. The reversal of 18121618795874 is 47859781612181.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125188559 + ... + 125333229.

It is an arithmetic number, because the mean of its divisors is an integer number (327873047040).

Almost surely, 2^{18121618795874} is an apocalyptic number.

18121618795874 is a deficient number, since it is larger than the sum of its proper divisors (13354193719966).

18121618795874 is a wasteful number, since it uses less digits than its factorization.

18121618795874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145068 (or 145057 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 68.

The spelling of 18121618795874 in words is "eighteen trillion, one hundred twenty-one billion, six hundred eighteen million, seven hundred ninety-five thousand, eight hundred seventy-four".