213416066868172 has 48 divisors (see below), whose sum is σ = 440860550473728. Its totient is φ = 88461416655360.

The previous prime is 213416066868161. The next prime is 213416066868227. The reversal of 213416066868172 is 271868660614312.

213416066868172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213416066868172.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70969858 + ... + 73915849.

It is an arithmetic number, because the mean of its divisors is an integer number (9184594801536).

Almost surely, 2^{213416066868172} is an apocalyptic number.

It is an amenable number.

213416066868172 is an abundant number, since it is smaller than the sum of its proper divisors (227444483605556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213416066868172 is a wasteful number, since it uses less digits than its factorization.

213416066868172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144887446 (or 144887444 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 61.

The spelling of 213416066868172 in words is "two hundred thirteen trillion, four hundred sixteen billion, sixty-six million, eight hundred sixty-eight thousand, one hundred seventy-two".