126378968879 has 2 divisors, whose sum is σ = 126378968880. Its totient is φ = 126378968878.

The previous prime is 126378968831. The next prime is 126378968897. The reversal of 126378968879 is 978869873621.

Together with next prime (126378968897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (978869873621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126378968879 - 2¹² = 126378964783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126378964879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63189484439 + 63189484440.

It is an arithmetic number, because the mean of its divisors is an integer number (63189484440).

Almost surely, 2^126378968879 is an apocalyptic number.

126378968879 is a deficient number, since it is larger than the sum of its proper divisors (1).

126378968879 is an equidigital number, since it uses as much as digits as its factorization.

126378968879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 438939648, while the sum is 74.

The spelling of 126378968879 in words is "one hundred twenty-six billion, three hundred seventy-eight million, nine hundred sixty-eight thousand, eight hundred seventy-nine".