20401325220323 has 4 divisors (see below), whose sum is σ = 20401571212008. Its totient is φ = 20401079228640.

The previous prime is 20401325220319. The next prime is 20401325220349. The reversal of 20401325220323 is 32302252310402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20401325220323 - 2² = 20401325220319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401325220823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122871398 + ... + 123037323.

It is an arithmetic number, because the mean of its divisors is an integer number (5100392803002).

Almost surely, 2^{20401325220323} is an apocalyptic number.

20401325220323 is a deficient number, since it is larger than the sum of its proper divisors (245991685).

20401325220323 is an equidigital number, since it uses as much as digits as its factorization.

20401325220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245991684.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 20401325220323 its reverse (32302252310402), we get a palindrome (52703577530725).

The spelling of 20401325220323 in words is "twenty trillion, four hundred one billion, three hundred twenty-five million, two hundred twenty thousand, three hundred twenty-three".