229809181663 has 2 divisors, whose sum is σ = 229809181664. Its totient is φ = 229809181662.

The previous prime is 229809181633. The next prime is 229809181697. The reversal of 229809181663 is 366181908922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229809181663 - 2²¹ = 229807084511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229809181633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114904590831 + 114904590832.

It is an arithmetic number, because the mean of its divisors is an integer number (114904590832).

Almost surely, 2^229809181663 is an apocalyptic number.

229809181663 is a deficient number, since it is larger than the sum of its proper divisors (1).

229809181663 is an equidigital number, since it uses as much as digits as its factorization.

229809181663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 229809181663 in words is "two hundred twenty-nine billion, eight hundred nine million, one hundred eighty-one thousand, six hundred sixty-three".