2018501670021 has 16 divisors (see below), whose sum is σ = 2748657888000. Its totient is φ = 1317007863488.

The previous prime is 2018501670011. The next prime is 2018501670083. The reversal of 2018501670021 is 1200761058102.

It is not a de Polignac number, because 2018501670021 - 2²⁵ = 2018468115589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018501670011) 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, 7760875 + ... + 8016743.

It is an arithmetic number, because the mean of its divisors is an integer number (171791118000).

Almost surely, 2^{2018501670021} is an apocalyptic number.

It is an amenable number.

2018501670021 is a deficient number, since it is larger than the sum of its proper divisors (730156217979).

2018501670021 is a wasteful number, since it uses less digits than its factorization.

2018501670021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311868.

The product of its (nonzero) digits is 6720, while the sum is 33.

The spelling of 2018501670021 in words is "two trillion, eighteen billion, five hundred one million, six hundred seventy thousand, twenty-one".