126727123155 has 32 divisors (see below), whose sum is σ = 203955141888. Its totient is φ = 67191427200.

The previous prime is 126727123141. The next prime is 126727123177. The reversal of 126727123155 is 551321727621.

It is a happy number.

It is not a de Polignac number, because 126727123155 - 2⁵ = 126727123123 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2325925 + ... + 2379785.

It is an arithmetic number, because the mean of its divisors is an integer number (6373598184).

Almost surely, 2^126727123155 is an apocalyptic number.

126727123155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126727123155 is a deficient number, since it is larger than the sum of its proper divisors (77228018733).

126727123155 is a wasteful number, since it uses less digits than its factorization.

126727123155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54787.

The product of its digits is 176400, while the sum is 42.

The spelling of 126727123155 in words is "one hundred twenty-six billion, seven hundred twenty-seven million, one hundred twenty-three thousand, one hundred fifty-five".