126044601601 has 4 divisors (see below), whose sum is σ = 126509711104. Its totient is φ = 125579492100.

The previous prime is 126044601583. The next prime is 126044601607. The reversal of 126044601601 is 106106440621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106106440621 = 47 ⋅2257583843.

It is a cyclic number.

It is not a de Polignac number, because 126044601601 - 2³³ = 117454667009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126044601607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232554345 + ... + 232554886.

It is an arithmetic number, because the mean of its divisors is an integer number (31627427776).

Almost surely, 2^126044601601 is an apocalyptic number.

It is an amenable number.

126044601601 is a deficient number, since it is larger than the sum of its proper divisors (465109503).

126044601601 is an equidigital number, since it uses as much as digits as its factorization.

126044601601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465109502.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 126044601601 in words is "one hundred twenty-six billion, forty-four million, six hundred one thousand, six hundred one".