206620243454 has 16 divisors (see below), whose sum is σ = 314664225120. Its totient is φ = 101735581920.

The previous prime is 206620243451. The next prime is 206620243493. The reversal of 206620243454 is 454342026602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206620243451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731789 + ... + 974040.

It is an arithmetic number, because the mean of its divisors is an integer number (19666514070).

Almost surely, 2^206620243454 is an apocalyptic number.

206620243454 is a deficient number, since it is larger than the sum of its proper divisors (108043981666).

206620243454 is a wasteful number, since it uses less digits than its factorization.

206620243454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706755.

The product of its (nonzero) digits is 276480, while the sum is 38.

The spelling of 206620243454 in words is "two hundred six billion, six hundred twenty million, two hundred forty-three thousand, four hundred fifty-four".