16853208862645 has 64 divisors (see below), whose sum is σ = 21363932528640. Its totient is φ = 12746937715200.

The previous prime is 16853208862643. The next prime is 16853208862657. The reversal of 16853208862645 is 54626880235861.

It is not a de Polignac number, because 16853208862645 - 2¹ = 16853208862643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16853208862643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 521706564 + ... + 521738866.

It is an arithmetic number, because the mean of its divisors is an integer number (333811445760).

Almost surely, 2^{16853208862645} is an apocalyptic number.

It is an amenable number.

16853208862645 is a deficient number, since it is larger than the sum of its proper divisors (4510723665995).

16853208862645 is a wasteful number, since it uses less digits than its factorization.

16853208862645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32866.

The product of its (nonzero) digits is 132710400, while the sum is 64.

The spelling of 16853208862645 in words is "sixteen trillion, eight hundred fifty-three billion, two hundred eight million, eight hundred sixty-two thousand, six hundred forty-five".