126661215206041 has 4 divisors (see below), whose sum is σ = 126662664788352. Its totient is φ = 126659765623732.

The previous prime is 126661215205997. The next prime is 126661215206047. The reversal of 126661215206041 is 140602512166621.

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 126661215206041 - 2⁷ = 126661215205913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126661215206047) 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, 724660081 + ... + 724834846.

It is an arithmetic number, because the mean of its divisors is an integer number (31665666197088).

Almost surely, 2^{126661215206041} is an apocalyptic number.

It is an amenable number.

126661215206041 is a deficient number, since it is larger than the sum of its proper divisors (1449582311).

126661215206041 is an equidigital number, since it uses as much as digits as its factorization.

126661215206041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449582310.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 126661215206041 in words is "one hundred twenty-six trillion, six hundred sixty-one billion, two hundred fifteen million, two hundred six thousand, forty-one".