126607655966213 has 4 divisors (see below), whose sum is σ = 133271216806560. Its totient is φ = 119944095125868.

The previous prime is 126607655966201. The next prime is 126607655966243. The reversal of 126607655966213 is 312669556706621.

It is a happy number.

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 not a de Polignac number, because 126607655966213 - 2¹⁴ = 126607655949829 is a prime.

It is a super-2 number, since 2×126607655966213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126607655966213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126607655966243) 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, 3331780420145 + ... + 3331780420182.

It is an arithmetic number, because the mean of its divisors is an integer number (33317804201640).

Almost surely, 2^{126607655966213} is an apocalyptic number.

It is an amenable number.

126607655966213 is a deficient number, since it is larger than the sum of its proper divisors (6663560840347).

126607655966213 is an equidigital number, since it uses as much as digits as its factorization.

126607655966213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6663560840346.

The product of its (nonzero) digits is 146966400, while the sum is 65.

The spelling of 126607655966213 in words is "one hundred twenty-six trillion, six hundred seven billion, six hundred fifty-five million, nine hundred sixty-six thousand, two hundred thirteen".