126644256670678 has 4 divisors (see below), whose sum is σ = 189966385006020. Its totient is φ = 63322128335338.

The previous prime is 126644256670579. The next prime is 126644256670699. The reversal of 126644256670678 is 876076652446621.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31661064167668 + ... + 31661064167671.

It is an arithmetic number, because the mean of its divisors is an integer number (47491596251505).

Almost surely, 2^{126644256670678} is an apocalyptic number.

126644256670678 is a deficient number, since it is larger than the sum of its proper divisors (63322128335342).

126644256670678 is an equidigital number, since it uses as much as digits as its factorization.

126644256670678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63322128335341.

The product of its (nonzero) digits is 975421440, while the sum is 70.

The spelling of 126644256670678 in words is "one hundred twenty-six trillion, six hundred forty-four billion, two hundred fifty-six million, six hundred seventy thousand, six hundred seventy-eight".