12278698632 has 84 divisors (see below), whose sum is σ = 34541854935. Its totient is φ = 4090078800.

The previous prime is 12278698631. The next prime is 12278698693. The reversal of 12278698632 is 23689687221.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

12278698632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6139349316 + 6139349316 = 78354^2 + 78354^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78354.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (12278698631) 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 20 ways as a sum of consecutive naturals, for example, 8461507 + ... + 8462957.

Almost surely, 2^12278698632 is an apocalyptic number.

12278698632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12278698632

12278698632 is an abundant number, since it is smaller than the sum of its proper divisors (22263156303).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12278698632 is an frugal number, since it uses more digits than its factorization.

12278698632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926 (or 1456 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 12278698632 in words is "twelve billion, two hundred seventy-eight million, six hundred ninety-eight thousand, six hundred thirty-two".