206726997151 has 2 divisors, whose sum is σ = 206726997152. Its totient is φ = 206726997150.

The previous prime is 206726997133. The next prime is 206726997227. The reversal of 206726997151 is 151799627602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206726997151 - 2⁵ = 206726997119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206726997092 and 206726997101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206726997551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103363498575 + 103363498576.

It is an arithmetic number, because the mean of its divisors is an integer number (103363498576).

Almost surely, 2^206726997151 is an apocalyptic number.

206726997151 is a deficient number, since it is larger than the sum of its proper divisors (1).

206726997151 is an equidigital number, since it uses as much as digits as its factorization.

206726997151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 206726997151 in words is "two hundred six billion, seven hundred twenty-six million, nine hundred ninety-seven thousand, one hundred fifty-one".