201766118431 has 2 divisors, whose sum is σ = 201766118432. Its totient is φ = 201766118430.

The previous prime is 201766118363. The next prime is 201766118447. The reversal of 201766118431 is 134811667102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201766118431 - 2¹³ = 201766110239 is a prime.

It is a super-2 number, since 2×201766118431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201766110431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100883059215 + 100883059216.

It is an arithmetic number, because the mean of its divisors is an integer number (100883059216).

Almost surely, 2^201766118431 is an apocalyptic number.

201766118431 is a deficient number, since it is larger than the sum of its proper divisors (1).

201766118431 is an equidigital number, since it uses as much as digits as its factorization.

201766118431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 201766118431 in words is "two hundred one billion, seven hundred sixty-six million, one hundred eighteen thousand, four hundred thirty-one".