20107412761 has 2 divisors, whose sum is σ = 20107412762. Its totient is φ = 20107412760.

The previous prime is 20107412747. The next prime is 20107412833. The reversal of 20107412761 is 16721470102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14140777225 + 5966635536 = 118915^2 + 77244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20107412761 is a prime.

It is not a weakly prime, because it can be changed into another prime (20107212761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10053706380 + 10053706381.

It is an arithmetic number, because the mean of its divisors is an integer number (10053706381).

Almost surely, 2^20107412761 is an apocalyptic number.

It is an amenable number.

20107412761 is a deficient number, since it is larger than the sum of its proper divisors (1).

20107412761 is an equidigital number, since it uses as much as digits as its factorization.

20107412761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

Adding to 20107412761 its reverse (16721470102), we get a palindrome (36828882863).

The spelling of 20107412761 in words is "twenty billion, one hundred seven million, four hundred twelve thousand, seven hundred sixty-one".