126057212767 has 4 divisors (see below), whose sum is σ = 126290221096. Its totient is φ = 125824204440.

The previous prime is 126057212711. The next prime is 126057212791. The reversal of 126057212767 is 767212750621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 767212750621 = 45503 ⋅16860707.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126057212767 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 (126057212467) 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, 116503353 + ... + 116504434.

It is an arithmetic number, because the mean of its divisors is an integer number (31572555274).

Almost surely, 2^126057212767 is an apocalyptic number.

126057212767 is a deficient number, since it is larger than the sum of its proper divisors (233008329).

126057212767 is an equidigital number, since it uses as much as digits as its factorization.

126057212767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233008328.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 126057212767 in words is "one hundred twenty-six billion, fifty-seven million, two hundred twelve thousand, seven hundred sixty-seven".