11963756669 has 2 divisors, whose sum is σ = 11963756670. Its totient is φ = 11963756668.

The previous prime is 11963756593. The next prime is 11963756671. The reversal of 11963756669 is 96665736911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8600336644 + 3363420025 = 92738^2 + 57995^2 .

It is a cyclic number.

It is not a de Polignac number, because 11963756669 - 2¹² = 11963752573 is a prime.

It is a super-2 number, since 2×11963756669² (a number of 21 digits) contains 22 as substring.

Together with 11963756671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11963756969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5981878334 + 5981878335.

It is an arithmetic number, because the mean of its divisors is an integer number (5981878335).

Almost surely, 2^11963756669 is an apocalyptic number.

It is an amenable number.

11963756669 is a deficient number, since it is larger than the sum of its proper divisors (1).

11963756669 is an equidigital number, since it uses as much as digits as its factorization.

11963756669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 59.

The spelling of 11963756669 in words is "eleven billion, nine hundred sixty-three million, seven hundred fifty-six thousand, six hundred sixty-nine".