12127747575 has 12 divisors (see below), whose sum is σ = 20051209448. Its totient is φ = 6468132000.

The previous prime is 12127747573. The next prime is 12127747591. The reversal of 12127747575 is 57574772121.

It is not a de Polignac number, because 12127747575 - 2¹ = 12127747573 is a prime.

It is a super-2 number, since 2×12127747575² (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 (12127747573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80851576 + ... + 80851725.

Almost surely, 2^12127747575 is an apocalyptic number.

12127747575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12127747575 is a deficient number, since it is larger than the sum of its proper divisors (7923461873).

12127747575 is a wasteful number, since it uses less digits than its factorization.

12127747575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161703314 (or 161703309 counting only the distinct ones).

The product of its digits is 960400, while the sum is 48.

The spelling of 12127747575 in words is "twelve billion, one hundred twenty-seven million, seven hundred forty-seven thousand, five hundred seventy-five".