206231365555151 has 4 divisors (see below), whose sum is σ = 206236750365000. Its totient is φ = 206225980745304.

The previous prime is 206231365555121. The next prime is 206231365555183. The reversal of 206231365555151 is 151555563132602.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 206231365555151 - 2⁶ = 206231365555087 is a prime.

It is a super-2 number, since 2×206231365555151² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206231365555151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206231365555121) 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, 2692347476 + ... + 2692424073.

It is an arithmetic number, because the mean of its divisors is an integer number (51559187591250).

Almost surely, 2^{206231365555151} is an apocalyptic number.

206231365555151 is a deficient number, since it is larger than the sum of its proper divisors (5384809849).

206231365555151 is an equidigital number, since it uses as much as digits as its factorization.

206231365555151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5384809848.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 206231365555151 in words is "two hundred six trillion, two hundred thirty-one billion, three hundred sixty-five million, five hundred fifty-five thousand, one hundred fifty-one".