20423255123404 has 12 divisors (see below), whose sum is σ = 40846510246864. Its totient is φ = 8752823624304.

The previous prime is 20423255123291. The next prime is 20423255123413. The reversal of 20423255123404 is 40432155232402.

It is a happy number.

20423255123404 is an admirable number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 364700984319 + ... + 364700984374.

Almost surely, 2^{20423255123404} is an apocalyptic number.

It is an amenable number.

20423255123404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20423255123404 is a wasteful number, since it uses less digits than its factorization.

20423255123404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729401968704 (or 729401968702 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 37.

The spelling of 20423255123404 in words is "twenty trillion, four hundred twenty-three billion, two hundred fifty-five million, one hundred twenty-three thousand, four hundred four".