20320300230555 has 64 divisors (see below), whose sum is σ = 35070746135040. Its totient is φ = 9987475931136.

The previous prime is 20320300230551. The next prime is 20320300230617. The reversal of 20320300230555 is 55503200302302.

It is not a de Polignac number, because 20320300230555 - 2² = 20320300230551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20320300230551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 480284712 + ... + 480327018.

It is an arithmetic number, because the mean of its divisors is an integer number (547980408360).

Almost surely, 2^{20320300230555} is an apocalyptic number.

20320300230555 is a deficient number, since it is larger than the sum of its proper divisors (14750445904485).

20320300230555 is a wasteful number, since it uses less digits than its factorization.

20320300230555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46300.

The product of its (nonzero) digits is 27000, while the sum is 30.

Adding to 20320300230555 its reverse (55503200302302), we get a palindrome (75823500532857).

The spelling of 20320300230555 in words is "twenty trillion, three hundred twenty billion, three hundred million, two hundred thirty thousand, five hundred fifty-five".