2170218668385 has 32 divisors (see below), whose sum is σ = 3633483951360. Its totient is φ = 1104919066368.

The previous prime is 2170218668383. The next prime is 2170218668419. The reversal of 2170218668385 is 5838668120712.

It is not a de Polignac number, because 2170218668385 - 2¹ = 2170218668383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2170218668383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36860245 + ... + 36919074.

It is an arithmetic number, because the mean of its divisors is an integer number (113546373480).

Almost surely, 2^{2170218668385} is an apocalyptic number.

It is an amenable number.

2170218668385 is a deficient number, since it is larger than the sum of its proper divisors (1463265282975).

2170218668385 is a wasteful number, since it uses less digits than its factorization.

2170218668385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73779417.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 2170218668385 in words is "two trillion, one hundred seventy billion, two hundred eighteen million, six hundred sixty-eight thousand, three hundred eighty-five".