2180217287903 has 16 divisors (see below), whose sum is σ = 2338925893920. Its totient is φ = 2025043200000.

The previous prime is 2180217287873. The next prime is 2180217287953. The reversal of 2180217287903 is 3097827120812.

It is a cyclic number.

It is not a de Polignac number, because 2180217287903 - 2¹⁸ = 2180217025759 is a prime.

It is a super-2 number, since 2×2180217287903² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180217287953) 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, 1878698 + ... + 2808903.

It is an arithmetic number, because the mean of its divisors is an integer number (146182868370).

Almost surely, 2^{2180217287903} is an apocalyptic number.

2180217287903 is a deficient number, since it is larger than the sum of its proper divisors (158708606017).

2180217287903 is a wasteful number, since it uses less digits than its factorization.

2180217287903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687978.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 2180217287903 in words is "two trillion, one hundred eighty billion, two hundred seventeen million, two hundred eighty-seven thousand, nine hundred three".