11827782431 has 2 divisors, whose sum is σ = 11827782432. Its totient is φ = 11827782430.

The previous prime is 11827782427. The next prime is 11827782467. The reversal of 11827782431 is 13428772811.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11827782431 - 2² = 11827782427 is a prime.

It is a super-2 number, since 2×11827782431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11827782481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5913891215 + 5913891216.

It is an arithmetic number, because the mean of its divisors is an integer number (5913891216).

Almost surely, 2^11827782431 is an apocalyptic number.

11827782431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11827782431 is an equidigital number, since it uses as much as digits as its factorization.

11827782431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 44.

The spelling of 11827782431 in words is "eleven billion, eight hundred twenty-seven million, seven hundred eighty-two thousand, four hundred thirty-one".