12451632771 has 4 divisors (see below), whose sum is σ = 16602177032. Its totient is φ = 8301088512.

The previous prime is 12451632749. The next prime is 12451632839. The reversal of 12451632771 is 17723615421.

12451632771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12451632771 - 2⁶ = 12451632707 is a prime.

It is a super-2 number, since 2×12451632771² (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 (12451632671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075272126 + ... + 2075272131.

It is an arithmetic number, because the mean of its divisors is an integer number (4150544258).

Almost surely, 2^12451632771 is an apocalyptic number.

12451632771 is a deficient number, since it is larger than the sum of its proper divisors (4150544261).

12451632771 is an equidigital number, since it uses as much as digits as its factorization.

12451632771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150544260.

The product of its digits is 70560, while the sum is 39.

The spelling of 12451632771 in words is "twelve billion, four hundred fifty-one million, six hundred thirty-two thousand, seven hundred seventy-one".