423567762161 has 2 divisors, whose sum is σ = 423567762162. Its totient is φ = 423567762160.

The previous prime is 423567762127. The next prime is 423567762181. The reversal of 423567762161 is 161267765324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223132472161 + 200435290000 = 472369^2 + 447700^2 .

It is a cyclic number.

It is not a de Polignac number, because 423567762161 - 2⁶ = 423567762097 is a prime.

It is not a weakly prime, because it can be changed into another prime (423567762181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211783881080 + 211783881081.

It is an arithmetic number, because the mean of its divisors is an integer number (211783881081).

Almost surely, 2^423567762161 is an apocalyptic number.

It is an amenable number.

423567762161 is a deficient number, since it is larger than the sum of its proper divisors (1).

423567762161 is an equidigital number, since it uses as much as digits as its factorization.

423567762161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 50.

The spelling of 423567762161 in words is "four hundred twenty-three billion, five hundred sixty-seven million, seven hundred sixty-two thousand, one hundred sixty-one".