223455402077 has 2 divisors, whose sum is σ = 223455402078. Its totient is φ = 223455402076.

The previous prime is 223455401977. The next prime is 223455402091. The reversal of 223455402077 is 770204554322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180891998596 + 42563403481 = 425314^2 + 206309^2 .

It is a cyclic number.

It is not a de Polignac number, because 223455402077 - 2¹² = 223455397981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223455402377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111727701038 + 111727701039.

It is an arithmetic number, because the mean of its divisors is an integer number (111727701039).

Almost surely, 2^223455402077 is an apocalyptic number.

It is an amenable number.

223455402077 is a deficient number, since it is larger than the sum of its proper divisors (1).

223455402077 is an equidigital number, since it uses as much as digits as its factorization.

223455402077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 41.

Adding to 223455402077 its reverse (770204554322), we get a palindrome (993659956399).

The spelling of 223455402077 in words is "two hundred twenty-three billion, four hundred fifty-five million, four hundred two thousand, seventy-seven".