20423445343004 has 24 divisors (see below), whose sum is σ = 39941194665456. Its totient is φ = 9056960240000.

The previous prime is 20423445342961. The next prime is 20423445343009. The reversal of 20423445343004 is 40034354432402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423445343009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5660598347 + ... + 5660601954.

It is an arithmetic number, because the mean of its divisors is an integer number (1664216444394).

Almost surely, 2^{20423445343004} is an apocalyptic number.

It is an amenable number.

20423445343004 is a deficient number, since it is larger than the sum of its proper divisors (19517749322452).

20423445343004 is a wasteful number, since it uses less digits than its factorization.

20423445343004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11321200357 (or 11321200355 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 38.

Adding to 20423445343004 its reverse (40034354432402), we get a palindrome (60457799775406).

The spelling of 20423445343004 in words is "twenty trillion, four hundred twenty-three billion, four hundred forty-five million, three hundred forty-three thousand, four".