126727387199 has 4 divisors (see below), whose sum is σ = 144831299664. Its totient is φ = 108623474736.

The previous prime is 126727387153. The next prime is 126727387217. The reversal of 126727387199 is 991783727621.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 126727387199 - 2⁸ = 126727386943 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 (126727387109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9051956222 + ... + 9051956235.

It is an arithmetic number, because the mean of its divisors is an integer number (36207824916).

Almost surely, 2^126727387199 is an apocalyptic number.

126727387199 is a deficient number, since it is larger than the sum of its proper divisors (18103912465).

126727387199 is an equidigital number, since it uses as much as digits as its factorization.

126727387199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18103912464.

The product of its digits is 16003008, while the sum is 62.

The spelling of 126727387199 in words is "one hundred twenty-six billion, seven hundred twenty-seven million, three hundred eighty-seven thousand, one hundred ninety-nine".