126651770626 has 8 divisors (see below), whose sum is σ = 192580089804. Its totient is φ = 62458407360.

The previous prime is 126651770617. The next prime is 126651770647. The reversal of 126651770626 is 626077156621.

It can be written as a sum of positive squares in 2 ways, for example, as 125812799401 + 838971225 = 354701^2 + 28965^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 126651770626.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433738795 + ... + 433739086.

Almost surely, 2^126651770626 is an apocalyptic number.

126651770626 is a deficient number, since it is larger than the sum of its proper divisors (65928319178).

126651770626 is an equidigital number, since it uses as much as digits as its factorization.

126651770626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867477956.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 126651770626 in words is "one hundred twenty-six billion, six hundred fifty-one million, seven hundred seventy thousand, six hundred twenty-six".