101717620691 has 2 divisors, whose sum is σ = 101717620692. Its totient is φ = 101717620690.

The previous prime is 101717620619. The next prime is 101717620699. The reversal of 101717620691 is 196026717101.

Together with previous prime (101717620619) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101717620691 is a prime.

It is not a weakly prime, because it can be changed into another prime (101717620699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50858810345 + 50858810346.

It is an arithmetic number, because the mean of its divisors is an integer number (50858810346).

Almost surely, 2^101717620691 is an apocalyptic number.

101717620691 is a deficient number, since it is larger than the sum of its proper divisors (1).

101717620691 is an equidigital number, since it uses as much as digits as its factorization.

101717620691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 41.

The spelling of 101717620691 in words is "one hundred one billion, seven hundred seventeen million, six hundred twenty thousand, six hundred ninety-one".