12127747631 has 8 divisors (see below), whose sum is σ = 12690536544. Its totient is φ = 11577327840.

The previous prime is 12127747591. The next prime is 12127747663. The reversal of 12127747631 is 13674772121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12127747631 - 2²⁶ = 12060638767 is a prime.

It is a super-2 number, since 2×12127747631² (a number of 21 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 (12127747531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3090275 + ... + 3094196.

It is an arithmetic number, because the mean of its divisors is an integer number (1586317068).

Almost surely, 2^12127747631 is an apocalyptic number.

12127747631 is a deficient number, since it is larger than the sum of its proper divisors (562788913).

12127747631 is an equidigital number, since it uses as much as digits as its factorization.

12127747631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184561.

The product of its digits is 98784, while the sum is 41.

The spelling of 12127747631 in words is "twelve billion, one hundred twenty-seven million, seven hundred forty-seven thousand, six hundred thirty-one".