423476909881 has 2 divisors, whose sum is σ = 423476909882. Its totient is φ = 423476909880.

The previous prime is 423476909873. The next prime is 423476909899. The reversal of 423476909881 is 188909674324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291060250000 + 132416659881 = 539500^2 + 363891^2 .

It is a cyclic number.

It is not a de Polignac number, because 423476909881 - 2³ = 423476909873 is a prime.

It is a super-2 number, since 2×423476909881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (423476909381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211738454940 + 211738454941.

It is an arithmetic number, because the mean of its divisors is an integer number (211738454941).

Almost surely, 2^423476909881 is an apocalyptic number.

It is an amenable number.

423476909881 is a deficient number, since it is larger than the sum of its proper divisors (1).

423476909881 is an equidigital number, since it uses as much as digits as its factorization.

423476909881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 423476909881 in words is "four hundred twenty-three billion, four hundred seventy-six million, nine hundred nine thousand, eight hundred eighty-one".