18460420128044 has 6 divisors (see below), whose sum is σ = 32305735224084. Its totient is φ = 9230210064020.

The previous prime is 18460420128041. The next prime is 18460420128079. The reversal of 18460420128044 is 44082102406481.

It is a super-2 number, since 2×18460420128044² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18460420127986 and 18460420128004.

It is not an unprimeable number, because it can be changed into a prime (18460420128041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2307552516002 + ... + 2307552516009.

It is an arithmetic number, because the mean of its divisors is an integer number (5384289204014).

Almost surely, 2^{18460420128044} is an apocalyptic number.

It is an amenable number.

18460420128044 is a deficient number, since it is larger than the sum of its proper divisors (13845315096040).

18460420128044 is a wasteful number, since it uses less digits than its factorization.

18460420128044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4615105032015 (or 4615105032013 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 44.

The spelling of 18460420128044 in words is "eighteen trillion, four hundred sixty billion, four hundred twenty million, one hundred twenty-eight thousand, forty-four".