18546207994112 has 18 divisors (see below), whose sum is σ = 37019969863758. Its totient is φ = 9273103996928.

The previous prime is 18546207994109. The next prime is 18546207994121. The reversal of 18546207994112 is 21149970264581.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17380360888576 + 1165847105536 = 4168976^2 + 1079744^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36223062233 + ... + 36223062744.

It is an arithmetic number, because the mean of its divisors is an integer number (2056664992431).

Almost surely, 2^{18546207994112} is an apocalyptic number.

It is an amenable number.

18546207994112 is a deficient number, since it is larger than the sum of its proper divisors (18473761869646).

18546207994112 is an frugal number, since it uses more digits than its factorization.

18546207994112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72446124993 (or 72446124979 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 59.

The spelling of 18546207994112 in words is "eighteen trillion, five hundred forty-six billion, two hundred seven million, nine hundred ninety-four thousand, one hundred twelve".