12127747574 has 16 divisors (see below), whose sum is σ = 18511679760. Its totient is φ = 5957422560.

The previous prime is 12127747573. The next prime is 12127747591. The reversal of 12127747574 is 47574772121.

It is a happy number.

It is a super-2 number, since 2×12127747574² (a number of 21 digits) contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45797 + ... + 162335.

It is an arithmetic number, because the mean of its divisors is an integer number (1156979985).

Almost surely, 2^12127747574 is an apocalyptic number.

12127747574 is a deficient number, since it is larger than the sum of its proper divisors (6383932186).

12127747574 is a wasteful number, since it uses less digits than its factorization.

12127747574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117455.

The product of its digits is 768320, while the sum is 47.

The spelling of 12127747574 in words is "twelve billion, one hundred twenty-seven million, seven hundred forty-seven thousand, five hundred seventy-four".