126778982567 has 8 divisors (see below), whose sum is σ = 129493334016. Its totient is φ = 124065336472.

The previous prime is 126778982563. The next prime is 126778982581. The reversal of 126778982567 is 765289877621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126778982567 - 2² = 126778982563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126778982497 and 126778982506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126778982563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195278 + ... + 540084.

It is an arithmetic number, because the mean of its divisors is an integer number (16186666752).

Almost surely, 2^126778982567 is an apocalyptic number.

126778982567 is a deficient number, since it is larger than the sum of its proper divisors (2714351449).

126778982567 is an equidigital number, since it uses as much as digits as its factorization.

126778982567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352677.

The product of its digits is 142248960, while the sum is 68.

The spelling of 126778982567 in words is "one hundred twenty-six billion, seven hundred seventy-eight million, nine hundred eighty-two thousand, five hundred sixty-seven".