10616565997 has 2 divisors, whose sum is σ = 10616565998. Its totient is φ = 10616565996.

The previous prime is 10616565961. The next prime is 10616566019. The reversal of 10616565997 is 79956561601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10458334756 + 158231241 = 102266^2 + 12579^2 .

It is a cyclic number.

It is not a de Polignac number, because 10616565997 - 2¹¹ = 10616563949 is a prime.

It is a super-2 number, since 2×10616565997² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10616562997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5308282998 + 5308282999.

It is an arithmetic number, because the mean of its divisors is an integer number (5308282999).

Almost surely, 2^10616565997 is an apocalyptic number.

It is an amenable number.

10616565997 is a deficient number, since it is larger than the sum of its proper divisors (1).

10616565997 is an equidigital number, since it uses as much as digits as its factorization.

10616565997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The spelling of 10616565997 in words is "ten billion, six hundred sixteen million, five hundred sixty-five thousand, nine hundred ninety-seven".