126788824891 has 2 divisors, whose sum is σ = 126788824892. Its totient is φ = 126788824890.

The previous prime is 126788824783. The next prime is 126788824901. The reversal of 126788824891 is 198428887621.

It is a strong prime.

It is an emirp because it is prime and its reverse (198428887621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126788824891 - 2⁷ = 126788824763 is a prime.

It is a super-2 number, since 2×126788824891² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126788828891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63394412445 + 63394412446.

It is an arithmetic number, because the mean of its divisors is an integer number (63394412446).

Almost surely, 2^126788824891 is an apocalyptic number.

126788824891 is a deficient number, since it is larger than the sum of its proper divisors (1).

126788824891 is an equidigital number, since it uses as much as digits as its factorization.

126788824891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24772608, while the sum is 64.

The spelling of 126788824891 in words is "one hundred twenty-six billion, seven hundred eighty-eight million, eight hundred twenty-four thousand, eight hundred ninety-one".