20372310481 has 2 divisors, whose sum is σ = 20372310482. Its totient is φ = 20372310480.

The previous prime is 20372310463. The next prime is 20372310577. The reversal of 20372310481 is 18401327302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16000985025 + 4371325456 = 126495^2 + 66116^2 .

It is a cyclic number.

It is not a de Polignac number, because 20372310481 - 2⁵ = 20372310449 is a prime.

It is a super-2 number, since 2×20372310481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20372310181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10186155240 + 10186155241.

It is an arithmetic number, because the mean of its divisors is an integer number (10186155241).

Almost surely, 2^20372310481 is an apocalyptic number.

It is an amenable number.

20372310481 is a deficient number, since it is larger than the sum of its proper divisors (1).

20372310481 is an equidigital number, since it uses as much as digits as its factorization.

20372310481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 20372310481 its reverse (18401327302), we get a palindrome (38773637783).

The spelling of 20372310481 in words is "twenty billion, three hundred seventy-two million, three hundred ten thousand, four hundred eighty-one".