20316105749 has 2 divisors, whose sum is σ = 20316105750. Its totient is φ = 20316105748.

The previous prime is 20316105727. The next prime is 20316105763. The reversal of 20316105749 is 94750161302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18810122500 + 1505983249 = 137150^2 + 38807^2 .

It is a cyclic number.

It is not a de Polignac number, because 20316105749 - 2¹² = 20316101653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20316101749) 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, 10158052874 + 10158052875.

It is an arithmetic number, because the mean of its divisors is an integer number (10158052875).

Almost surely, 2^20316105749 is an apocalyptic number.

It is an amenable number.

20316105749 is a deficient number, since it is larger than the sum of its proper divisors (1).

20316105749 is an equidigital number, since it uses as much as digits as its factorization.

20316105749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 20316105749 in words is "twenty billion, three hundred sixteen million, one hundred five thousand, seven hundred forty-nine".