126713609699 has 4 divisors (see below), whose sum is σ = 134167351464. Its totient is φ = 119259867936.

The previous prime is 126713609689. The next prime is 126713609747. The reversal of 126713609699 is 996906317621.

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

It is a cyclic number.

It is not a de Polignac number, because 126713609699 - 2³² = 122418642403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126713609689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3726870857 + ... + 3726870890.

It is an arithmetic number, because the mean of its divisors is an integer number (33541837866).

Almost surely, 2^126713609699 is an apocalyptic number.

126713609699 is a deficient number, since it is larger than the sum of its proper divisors (7453741765).

126713609699 is an equidigital number, since it uses as much as digits as its factorization.

126713609699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7453741764.

The product of its (nonzero) digits is 6613488, while the sum is 59.

The spelling of 126713609699 in words is "one hundred twenty-six billion, seven hundred thirteen million, six hundred nine thousand, six hundred ninety-nine".