229797872641 has 4 divisors (see below), whose sum is σ = 232379871300. Its totient is φ = 227215873984.

The previous prime is 229797872609. The next prime is 229797872651. The reversal of 229797872641 is 146278797922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146278797922 = 2 ⋅73139398961.

It can be written as a sum of positive squares in 2 ways, for example, as 67633804225 + 162164068416 = 260065^2 + 402696^2 .

It is a cyclic number.

It is not a de Polignac number, because 229797872641 - 2⁵ = 229797872609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229797872651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290999196 + ... + 1290999373.

It is an arithmetic number, because the mean of its divisors is an integer number (58094967825).

Almost surely, 2^229797872641 is an apocalyptic number.

It is an amenable number.

229797872641 is a deficient number, since it is larger than the sum of its proper divisors (2581998659).

229797872641 is an equidigital number, since it uses as much as digits as its factorization.

229797872641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581998658.

The product of its digits is 42674688, while the sum is 64.

The spelling of 229797872641 in words is "two hundred twenty-nine billion, seven hundred ninety-seven million, eight hundred seventy-two thousand, six hundred forty-one".