20100995617 has 2 divisors, whose sum is σ = 20100995618. Its totient is φ = 20100995616.

The previous prime is 20100995611. The next prime is 20100995647. The reversal of 20100995617 is 71659900102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13149438241 + 6951557376 = 114671^2 + 83376^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100995617 - 2²³ = 20092607009 is a prime.

It is a super-3 number, since 3×20100995617³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20100995617.

It is not a weakly prime, because it can be changed into another prime (20100995611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050497808 + 10050497809.

It is an arithmetic number, because the mean of its divisors is an integer number (10050497809).

Almost surely, 2^20100995617 is an apocalyptic number.

It is an amenable number.

20100995617 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100995617 is an equidigital number, since it uses as much as digits as its factorization.

20100995617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 20100995617 in words is "twenty billion, one hundred million, nine hundred ninety-five thousand, six hundred seventeen".