206241645403 has 4 divisors (see below), whose sum is σ = 215208673488. Its totient is φ = 197274617320.

The previous prime is 206241645343. The next prime is 206241645419. The reversal of 206241645403 is 304546142602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206241645403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206241645473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4483514008 + ... + 4483514053.

It is an arithmetic number, because the mean of its divisors is an integer number (53802168372).

Almost surely, 2^206241645403 is an apocalyptic number.

206241645403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

206241645403 is a deficient number, since it is larger than the sum of its proper divisors (8967028085).

206241645403 is an equidigital number, since it uses as much as digits as its factorization.

206241645403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8967028084.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 206241645403 in words is "two hundred six billion, two hundred forty-one million, six hundred forty-five thousand, four hundred three".