206873785453 has 16 divisors (see below), whose sum is σ = 216612950400. Its totient is φ = 197571343200.

The previous prime is 206873785429. The next prime is 206873785477. The reversal of 206873785453 is 354587378602.

It is an interprime number because it is at equal distance from previous prime (206873785429) and next prime (206873785477).

It is not a de Polignac number, because 206873785453 - 2⁵ = 206873785421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206873785493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8005153 + ... + 8030953.

It is an arithmetic number, because the mean of its divisors is an integer number (13538309400).

Almost surely, 2^206873785453 is an apocalyptic number.

206873785453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

206873785453 is a deficient number, since it is larger than the sum of its proper divisors (9739164947).

206873785453 is an frugal number, since it uses more digits than its factorization.

206873785453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26529 (or 26483 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 58.

The spelling of 206873785453 in words is "two hundred six billion, eight hundred seventy-three million, seven hundred eighty-five thousand, four hundred fifty-three".