206187970433 has 4 divisors (see below), whose sum is σ = 206199382020. Its totient is φ = 206176558848.

The previous prime is 206187970423. The next prime is 206187970447. The reversal of 206187970433 is 334079781602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21740912704 + 184447057729 = 147448^2 + 429473^2 .

It is a cyclic number.

It is not a de Polignac number, because 206187970433 - 2⁶ = 206187970369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206187970423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5678648 + ... + 5714841.

It is an arithmetic number, because the mean of its divisors is an integer number (51549845505).

Almost surely, 2^206187970433 is an apocalyptic number.

It is an amenable number.

206187970433 is a deficient number, since it is larger than the sum of its proper divisors (11411587).

206187970433 is a wasteful number, since it uses less digits than its factorization.

206187970433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11411586.

The product of its (nonzero) digits is 1524096, while the sum is 50.

It can be divided in two parts, 2061879 and 70433, that added together give a palindrome (2132312).

The spelling of 206187970433 in words is "two hundred six billion, one hundred eighty-seven million, nine hundred seventy thousand, four hundred thirty-three".