420311164109 has 2 divisors, whose sum is σ = 420311164110. Its totient is φ = 420311164108.

The previous prime is 420311164103. The next prime is 420311164153. The reversal of 420311164109 is 901461113024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400752302500 + 19558861609 = 633050^2 + 139853^2 .

It is a cyclic number.

It is not a de Polignac number, because 420311164109 - 2¹² = 420311160013 is a prime.

It is a super-2 number, since 2×420311164109² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420311164103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210155582054 + 210155582055.

It is an arithmetic number, because the mean of its divisors is an integer number (210155582055).

Almost surely, 2^420311164109 is an apocalyptic number.

It is an amenable number.

420311164109 is a deficient number, since it is larger than the sum of its proper divisors (1).

420311164109 is an equidigital number, since it uses as much as digits as its factorization.

420311164109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 420311164109 in words is "four hundred twenty billion, three hundred eleven million, one hundred sixty-four thousand, one hundred nine".