16866939802355 has 8 divisors (see below), whose sum is σ = 20240525731200. Its totient is φ = 13493419862976.

The previous prime is 16866939802343. The next prime is 16866939802369. The reversal of 16866939802355 is 55320893966861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16866939802355 - 2⁶ = 16866939802291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15933290 + ... + 16958879.

It is an arithmetic number, because the mean of its divisors is an integer number (2530065716400).

Almost surely, 2^{16866939802355} is an apocalyptic number.

16866939802355 is a deficient number, since it is larger than the sum of its proper divisors (3373585928845).

16866939802355 is a wasteful number, since it uses less digits than its factorization.

16866939802355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32994733.

The product of its (nonzero) digits is 503884800, while the sum is 71.

The spelling of 16866939802355 in words is "sixteen trillion, eight hundred sixty-six billion, nine hundred thirty-nine million, eight hundred two thousand, three hundred fifty-five".