11864159969 has 2 divisors, whose sum is σ = 11864159970. Its totient is φ = 11864159968.

The previous prime is 11864159959. The next prime is 11864160013. The reversal of 11864159969 is 96995146811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6649587025 + 5214572944 = 81545^2 + 72212^2 .

It is a cyclic number.

It is not a de Polignac number, because 11864159969 - 2²⁴ = 11847382753 is a prime.

It is a super-2 number, since 2×11864159969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11864159929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5932079984 + 5932079985.

It is an arithmetic number, because the mean of its divisors is an integer number (5932079985).

Almost surely, 2^11864159969 is an apocalyptic number.

It is an amenable number.

11864159969 is a deficient number, since it is larger than the sum of its proper divisors (1).

11864159969 is an equidigital number, since it uses as much as digits as its factorization.

11864159969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 59.

The spelling of 11864159969 in words is "eleven billion, eight hundred sixty-four million, one hundred fifty-nine thousand, nine hundred sixty-nine".