18845461499441 has 16 divisors (see below), whose sum is σ = 19027491753600. Its totient is φ = 18664250035200.

The previous prime is 18845461499419. The next prime is 18845461499461. The reversal of 18845461499441 is 14499416454881.

It is a cyclic number.

It is not a de Polignac number, because 18845461499441 - 2¹⁰ = 18845461498417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18845461499461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86470490 + ... + 86688156.

It is an arithmetic number, because the mean of its divisors is an integer number (1189218234600).

Almost surely, 2^{18845461499441} is an apocalyptic number.

It is an amenable number.

18845461499441 is a deficient number, since it is larger than the sum of its proper divisors (182030254159).

18845461499441 is a wasteful number, since it uses less digits than its factorization.

18845461499441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219544.

The product of its digits is 159252480, while the sum is 68.

The spelling of 18845461499441 in words is "eighteen trillion, eight hundred forty-five billion, four hundred sixty-one million, four hundred ninety-nine thousand, four hundred forty-one".