423423923571 has 48 divisors (see below), whose sum is σ = 671084144640. Its totient is φ = 255133368000.

The previous prime is 423423923569. The next prime is 423423923627. The reversal of 423423923571 is 175329324324.

423423923571 is a `hidden beast` number, since 4 + 2 + 3 + 42 + 39 + 2 + 3 + 571 = 666.

It is not a de Polignac number, because 423423923571 - 2¹ = 423423923569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423423923371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40478940 + ... + 40489398.

It is an arithmetic number, because the mean of its divisors is an integer number (13980919680).

Almost surely, 2^423423923571 is an apocalyptic number.

423423923571 is a deficient number, since it is larger than the sum of its proper divisors (247660221069).

423423923571 is a wasteful number, since it uses less digits than its factorization.

423423923571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12808 (or 12805 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The spelling of 423423923571 in words is "four hundred twenty-three billion, four hundred twenty-three million, nine hundred twenty-three thousand, five hundred seventy-one".