206049172606819 has 8 divisors (see below), whose sum is σ = 218172126194208. Its totient is φ = 193926487244160.

The previous prime is 206049172606799. The next prime is 206049172606841. The reversal of 206049172606819 is 918606271940602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206049172606819 - 2⁹ = 206049172606307 is a prime.

It is a super-2 number, since 2×206049172606819² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206049172636819) 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, 65473527 + ... + 68548384.

It is an arithmetic number, because the mean of its divisors is an integer number (27271515774276).

Almost surely, 2^{206049172606819} is an apocalyptic number.

206049172606819 is a deficient number, since it is larger than the sum of its proper divisors (12122953587389).

206049172606819 is a wasteful number, since it uses less digits than its factorization.

206049172606819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134112365.

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 206049172606819 in words is "two hundred six trillion, forty-nine billion, one hundred seventy-two million, six hundred six thousand, eight hundred nineteen".