206741042251 has 8 divisors (see below), whose sum is σ = 209083161600. Its totient is φ = 204399349440.

The previous prime is 206741042197. The next prime is 206741042267. The reversal of 206741042251 is 152240147602.

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 206741042251 - 2²³ = 206732653643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206741042281) 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, 924361 + ... + 1126021.

It is an arithmetic number, because the mean of its divisors is an integer number (26135395200).

Almost surely, 2^206741042251 is an apocalyptic number.

206741042251 is a deficient number, since it is larger than the sum of its proper divisors (2342119349).

206741042251 is a wasteful number, since it uses less digits than its factorization.

206741042251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213269.

The product of its (nonzero) digits is 26880, while the sum is 34.

Adding to 206741042251 its reverse (152240147602), we get a palindrome (358981189853).

The spelling of 206741042251 in words is "two hundred six billion, seven hundred forty-one million, forty-two thousand, two hundred fifty-one".