18012449766648 has 64 divisors (see below), whose sum is σ = 45097955481600. Its totient is φ = 5995243013760.

The previous prime is 18012449766517. The next prime is 18012449766691. The reversal of 18012449766648 is 84666794421081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75208833 + ... + 75447951.

It is an arithmetic number, because the mean of its divisors is an integer number (704655554400).

Almost surely, 2^{18012449766648} is an apocalyptic number.

It is an amenable number.

18012449766648 is an abundant number, since it is smaller than the sum of its proper divisors (27085505714952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18012449766648 is a wasteful number, since it uses less digits than its factorization.

18012449766648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243772 (or 243768 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 66.

The spelling of 18012449766648 in words is "eighteen trillion, twelve billion, four hundred forty-nine million, seven hundred sixty-six thousand, six hundred forty-eight".