206917764019 has 16 divisors (see below), whose sum is σ = 214716902400. Its totient is φ = 199163403936.

The previous prime is 206917764007. The next prime is 206917764061. The reversal of 206917764019 is 910467719602.

It is not a de Polignac number, because 206917764019 - 2³⁷ = 69478810547 is a prime.

It is a super-2 number, since 2×206917764019² (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 (906917764019) 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, 43994622 + ... + 43999324.

It is an arithmetic number, because the mean of its divisors is an integer number (13419806400).

Almost surely, 2^206917764019 is an apocalyptic number.

206917764019 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

206917764019 is a deficient number, since it is larger than the sum of its proper divisors (7799138381).

206917764019 is a wasteful number, since it uses less digits than its factorization.

206917764019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9114.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 206917764019 in words is "two hundred six billion, nine hundred seventeen million, seven hundred sixty-four thousand, nineteen".