20611112969 has 2 divisors, whose sum is σ = 20611112970. Its totient is φ = 20611112968.

The previous prime is 20611112947. The next prime is 20611113007. The reversal of 20611112969 is 96921111602.

It is an a-pointer prime, because the next prime (20611113007) can be obtained adding 20611112969 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20567288569 + 43824400 = 143413^2 + 6620^2 .

It is a cyclic number.

It is not a de Polignac number, because 20611112969 - 2⁸ = 20611112713 is a prime.

It is a super-2 number, since 2×20611112969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20611112909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10305556484 + 10305556485.

It is an arithmetic number, because the mean of its divisors is an integer number (10305556485).

Almost surely, 2^20611112969 is an apocalyptic number.

It is an amenable number.

20611112969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20611112969 is an equidigital number, since it uses as much as digits as its factorization.

20611112969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 20611112969 in words is "twenty billion, six hundred eleven million, one hundred twelve thousand, nine hundred sixty-nine".