206917450019 has 16 divisors (see below), whose sum is σ = 251645760000. Its totient is φ = 166086163584.

The previous prime is 206917450013. The next prime is 206917450037. The reversal of 206917450019 is 910054719602.

206917450019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 206917450019 - 2⁸ = 206917449763 is a prime.

It is a super-2 number, since 2×206917450019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206917450013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4345169 + ... + 4392530.

It is an arithmetic number, because the mean of its divisors is an integer number (15727860000).

Almost surely, 2^206917450019 is an apocalyptic number.

206917450019 is a deficient number, since it is larger than the sum of its proper divisors (44728309981).

206917450019 is a wasteful number, since it uses less digits than its factorization.

206917450019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737922.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 206917450019 in words is "two hundred six billion, nine hundred seventeen million, four hundred fifty thousand, nineteen".