11782311769 has 2 divisors, whose sum is σ = 11782311770. Its totient is φ = 11782311768.

The previous prime is 11782311767. The next prime is 11782311799. The reversal of 11782311769 is 96711328711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10632084544 + 1150227225 = 103112^2 + 33915^2 .

It is a cyclic number.

It is not a de Polignac number, because 11782311769 - 2¹ = 11782311767 is a prime.

It is a super-2 number, since 2×11782311769² (a number of 21 digits) contains 22 as substring.

Together with 11782311767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11782311767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5891155884 + 5891155885.

It is an arithmetic number, because the mean of its divisors is an integer number (5891155885).

Almost surely, 2^11782311769 is an apocalyptic number.

It is an amenable number.

11782311769 is a deficient number, since it is larger than the sum of its proper divisors (1).

11782311769 is an equidigital number, since it uses as much as digits as its factorization.

11782311769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 46.

The spelling of 11782311769 in words is "eleven billion, seven hundred eighty-two million, three hundred eleven thousand, seven hundred sixty-nine".