206172234239 has 8 divisors (see below), whose sum is σ = 216908957328. Its totient is φ = 195707327040.

The previous prime is 206172234227. The next prime is 206172234253. The reversal of 206172234239 is 932432271602.

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

It is not a de Polignac number, because 206172234239 - 2¹⁶ = 206172168703 is a prime.

It is a super-2 number, since 2×206172234239² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206172234196 and 206172234205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206172234299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67952417 + ... + 67955450.

It is an arithmetic number, because the mean of its divisors is an integer number (27113619666).

Almost surely, 2^206172234239 is an apocalyptic number.

206172234239 is a deficient number, since it is larger than the sum of its proper divisors (10736723089).

206172234239 is a wasteful number, since it uses less digits than its factorization.

206172234239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135907945.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 206172234239 in words is "two hundred six billion, one hundred seventy-two million, two hundred thirty-four thousand, two hundred thirty-nine".