10691636577889 has 2 divisors, whose sum is σ = 10691636577890. Its totient is φ = 10691636577888.

The previous prime is 10691636577851. The next prime is 10691636577959. The reversal of 10691636577889 is 98877563619601.

10691636577889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10687720947264 + 3915630625 = 3269208^2 + 62575^2 .

It is a cyclic number.

It is not a de Polignac number, because 10691636577889 - 2¹⁷ = 10691636446817 is a prime.

It is a super-2 number, since 2×10691636577889² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10691636577289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5345818288944 + 5345818288945.

It is an arithmetic number, because the mean of its divisors is an integer number (5345818288945).

Almost surely, 2^{10691636577889} is an apocalyptic number.

It is an amenable number.

10691636577889 is a deficient number, since it is larger than the sum of its proper divisors (1).

10691636577889 is an equidigital number, since it uses as much as digits as its factorization.

10691636577889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 823011840, while the sum is 76.

The spelling of 10691636577889 in words is "ten trillion, six hundred ninety-one billion, six hundred thirty-six million, five hundred seventy-seven thousand, eight hundred eighty-nine".