126755261051 has 4 divisors (see below), whose sum is σ = 133426590600. Its totient is φ = 120083931504.

The previous prime is 126755261029. The next prime is 126755261063. The reversal of 126755261051 is 150162557621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150162557621 = 7039 ⋅21332939.

It is a cyclic number.

It is not a de Polignac number, because 126755261051 - 2²² = 126751066747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126755261251) 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, 3335664746 + ... + 3335664783.

It is an arithmetic number, because the mean of its divisors is an integer number (33356647650).

Almost surely, 2^126755261051 is an apocalyptic number.

126755261051 is a deficient number, since it is larger than the sum of its proper divisors (6671329549).

126755261051 is an equidigital number, since it uses as much as digits as its factorization.

126755261051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671329548.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 126755261051 in words is "one hundred twenty-six billion, seven hundred fifty-five million, two hundred sixty-one thousand, fifty-one".