10868821969 has 2 divisors, whose sum is σ = 10868821970. Its totient is φ = 10868821968.

The previous prime is 10868821963. The next prime is 10868821993. The reversal of 10868821969 is 96912886801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10294740369 + 574081600 = 101463^2 + 23960^2 .

It is a cyclic number.

It is not a de Polignac number, because 10868821969 - 2³ = 10868821961 is a prime.

It is a super-2 number, since 2×10868821969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10868821961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5434410984 + 5434410985.

It is an arithmetic number, because the mean of its divisors is an integer number (5434410985).

Almost surely, 2^10868821969 is an apocalyptic number.

It is an amenable number.

10868821969 is a deficient number, since it is larger than the sum of its proper divisors (1).

10868821969 is an equidigital number, since it uses as much as digits as its factorization.

10868821969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 58.

The spelling of 10868821969 in words is "ten billion, eight hundred sixty-eight million, eight hundred twenty-one thousand, nine hundred sixty-nine".