2187167017172 has 12 divisors (see below), whose sum is σ = 3830022875616. Its totient is φ = 1092874767000.

The previous prime is 2187167017141. The next prime is 2187167017181. The reversal of 2187167017172 is 2717107617812.

It is a super-3 number, since 3×2187167017172³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2187167017172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177178454 + ... + 177190797.

It is an arithmetic number, because the mean of its divisors is an integer number (319168572968).

Almost surely, 2^{2187167017172} is an apocalyptic number.

It is an amenable number.

2187167017172 is a deficient number, since it is larger than the sum of its proper divisors (1642855858444).

2187167017172 is a wasteful number, since it uses less digits than its factorization.

2187167017172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354370798 (or 354370796 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 50.

The spelling of 2187167017172 in words is "two trillion, one hundred eighty-seven billion, one hundred sixty-seven million, seventeen thousand, one hundred seventy-two".