126347606743621 has 4 divisors (see below), whose sum is σ = 126434923681312. Its totient is φ = 126260289805932.

The previous prime is 126347606743573. The next prime is 126347606743627.

It is a happy number.

126347606743621 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126347606743621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126347606743627) 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, 43658466675 + ... + 43658469568.

It is an arithmetic number, because the mean of its divisors is an integer number (31608730920328).

Almost surely, 2^{126347606743621} is an apocalyptic number.

It is an amenable number.

126347606743621 is a deficient number, since it is larger than the sum of its proper divisors (87316937691).

126347606743621 is an equidigital number, since it uses as much as digits as its factorization.

126347606743621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87316937690.

The product of its (nonzero) digits is 36578304, while the sum is 58.

The spelling of 126347606743621 in words is "one hundred twenty-six trillion, three hundred forty-seven billion, six hundred six million, seven hundred forty-three thousand, six hundred twenty-one".