126796855687 has 4 divisors (see below), whose sum is σ = 132309762480. Its totient is φ = 121283948896.

The previous prime is 126796855667. The next prime is 126796855709. The reversal of 126796855687 is 786558697621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786558697621 = 108643 ⋅7239847.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126796855687 is a prime.

It is a super-2 number, since 2×126796855687² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126796855607) 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, 2756453362 + ... + 2756453407.

It is an arithmetic number, because the mean of its divisors is an integer number (33077440620).

Almost surely, 2^126796855687 is an apocalyptic number.

126796855687 is a deficient number, since it is larger than the sum of its proper divisors (5512906793).

126796855687 is an equidigital number, since it uses as much as digits as its factorization.

126796855687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5512906792.

The product of its digits is 304819200, while the sum is 70.

The spelling of 126796855687 in words is "one hundred twenty-six billion, seven hundred ninety-six million, eight hundred fifty-five thousand, six hundred eighty-seven".