12127747627 has 16 divisors (see below), whose sum is σ = 12284618112.
Its totient is φ = 11972322880.
The previous prime is 12127747591. The next prime is 12127747663. The reversal of 12127747627 is 72674772121.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (12127747591) and next prime (12127747663).
It is a de Polignac number, because none of the positive numbers 2k-12127747627 is a prime.
It is a super-2 number, since 2×121277476272 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12127747127) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24699852 + ... + 24700342.
It is an arithmetic number, because the mean of its divisors is an integer number (767788632).
Almost surely, 212127747627 is an apocalyptic number.
12127747627 is a deficient number, since it is larger than the sum of its proper divisors (156870485).
12127747627 is a wasteful number, since it uses less digits than its factorization.
12127747627 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1418.
The product of its digits is 460992, while the sum is 46.
The spelling of 12127747627 in words is "twelve billion, one hundred twenty-seven million, seven hundred forty-seven thousand, six hundred twenty-seven".