20616717311 has 2 divisors, whose sum is σ = 20616717312. Its totient is φ = 20616717310.

The previous prime is 20616717287. The next prime is 20616717383. The reversal of 20616717311 is 11371761602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20616717311 - 2³⁴ = 3436848127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20616717911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10308358655 + 10308358656.

It is an arithmetic number, because the mean of its divisors is an integer number (10308358656).

Almost surely, 2^20616717311 is an apocalyptic number.

20616717311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20616717311 is an equidigital number, since it uses as much as digits as its factorization.

20616717311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The spelling of 20616717311 in words is "twenty billion, six hundred sixteen million, seven hundred seventeen thousand, three hundred eleven".