23220420325455 has 128 divisors (see below), whose sum is σ = 39296648160000. Its totient is φ = 11692814745600.

The previous prime is 23220420325451. The next prime is 23220420325517. The reversal of 23220420325455 is 55452302402232.

It is not a de Polignac number, because 23220420325455 - 2² = 23220420325451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220420325451) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8446859421 + ... + 8446862169.

It is an arithmetic number, because the mean of its divisors is an integer number (307005063750).

Almost surely, 2^{23220420325455} is an apocalyptic number.

23220420325455 is a deficient number, since it is larger than the sum of its proper divisors (16076227834545).

23220420325455 is a wasteful number, since it uses less digits than its factorization.

23220420325455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4685.

The product of its (nonzero) digits is 576000, while the sum is 39.

Adding to 23220420325455 its reverse (55452302402232), we get a palindrome (78672722727687).

The spelling of 23220420325455 in words is "twenty-three trillion, two hundred twenty billion, four hundred twenty million, three hundred twenty-five thousand, four hundred fifty-five".