18465468960721 has 8 divisors (see below), whose sum is σ = 19562145291360. Its totient is φ = 17369956216128.

The previous prime is 18465468960709. The next prime is 18465468960737. The reversal of 18465468960721 is 12706986456481.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18465468960721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18465468960751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290863831 + ... + 290927308.

It is an arithmetic number, because the mean of its divisors is an integer number (2445268161420).

Almost surely, 2^{18465468960721} is an apocalyptic number.

It is an amenable number.

18465468960721 is a deficient number, since it is larger than the sum of its proper divisors (1096676330639).

18465468960721 is a wasteful number, since it uses less digits than its factorization.

18465468960721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581793023.

The product of its (nonzero) digits is 139345920, while the sum is 67.

The spelling of 18465468960721 in words is "eighteen trillion, four hundred sixty-five billion, four hundred sixty-eight million, nine hundred sixty thousand, seven hundred twenty-one".