223436437223261 has 2 divisors, whose sum is σ = 223436437223262. Its totient is φ = 223436437223260.

The previous prime is 223436437223243. The next prime is 223436437223299. The reversal of 223436437223261 is 162322734634322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223135180044100 + 301257179161 = 14937710^2 + 548869^2 .

It is a cyclic number.

It is not a de Polignac number, because 223436437223261 - 2³⁰ = 223435363481437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223436437223861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111718218611630 + 111718218611631.

It is an arithmetic number, because the mean of its divisors is an integer number (111718218611631).

Almost surely, 2^{223436437223261} is an apocalyptic number.

It is an amenable number.

223436437223261 is a deficient number, since it is larger than the sum of its proper divisors (1).

223436437223261 is an equidigital number, since it uses as much as digits as its factorization.

223436437223261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 50.

The spelling of 223436437223261 in words is "two hundred twenty-three trillion, four hundred thirty-six billion, four hundred thirty-seven million, two hundred twenty-three thousand, two hundred sixty-one".