18419013878671 has 32 divisors (see below), whose sum is σ = 22102184890368. Its totient is φ = 15007627345920.

The previous prime is 18419013878669. The next prime is 18419013878731. The reversal of 18419013878671 is 17687831091481.

It is a cyclic number.

It is not a de Polignac number, because 18419013878671 - 2¹ = 18419013878669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18419013878971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17317071 + ... + 18349903.

It is an arithmetic number, because the mean of its divisors is an integer number (690693277824).

Almost surely, 2^{18419013878671} is an apocalyptic number.

18419013878671 is a deficient number, since it is larger than the sum of its proper divisors (3683171011697).

18419013878671 is a wasteful number, since it uses less digits than its factorization.

18419013878671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033551.

The product of its (nonzero) digits is 16257024, while the sum is 64.

The spelling of 18419013878671 in words is "eighteen trillion, four hundred nineteen billion, thirteen million, eight hundred seventy-eight thousand, six hundred seventy-one".