423354811877 has 2 divisors, whose sum is σ = 423354811878. Its totient is φ = 423354811876.

The previous prime is 423354811849. The next prime is 423354811903. The reversal of 423354811877 is 778118453324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302550602116 + 120804209761 = 550046^2 + 347569^2 .

It is a cyclic number.

It is not a de Polignac number, because 423354811877 - 2¹² = 423354807781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423354813877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211677405938 + 211677405939.

It is an arithmetic number, because the mean of its divisors is an integer number (211677405939).

Almost surely, 2^423354811877 is an apocalyptic number.

It is an amenable number.

423354811877 is a deficient number, since it is larger than the sum of its proper divisors (1).

423354811877 is an equidigital number, since it uses as much as digits as its factorization.

423354811877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 53.

The spelling of 423354811877 in words is "four hundred twenty-three billion, three hundred fifty-four million, eight hundred eleven thousand, eight hundred seventy-seven".