20320330152277 has 2 divisors, whose sum is σ = 20320330152278. Its totient is φ = 20320330152276.

The previous prime is 20320330152229. The next prime is 20320330152281. The reversal of 20320330152277 is 77225103302302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15654928870161 + 4665401282116 = 3956631^2 + 2159954^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320330152277 - 2⁴³ = 11524237130069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20320330152077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160165076138 + 10160165076139.

It is an arithmetic number, because the mean of its divisors is an integer number (10160165076139).

Almost surely, 2^{20320330152277} is an apocalyptic number.

It is an amenable number.

20320330152277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320330152277 is an equidigital number, since it uses as much as digits as its factorization.

20320330152277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 37.

Adding to 20320330152277 its reverse (77225103302302), we get a palindrome (97545433454579).

The spelling of 20320330152277 in words is "twenty trillion, three hundred twenty billion, three hundred thirty million, one hundred fifty-two thousand, two hundred seventy-seven".