12074646640 has 120 divisors (see below), whose sum is σ = 32947199280. Its totient is φ = 4103092224.

The previous prime is 12074646631. The next prime is 12074646667. The reversal of 12074646640 is 4664647021.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 12074646593 and 12074646602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 429331 + ... + 456589.

It is an arithmetic number, because the mean of its divisors is an integer number (274559994).

Almost surely, 2^12074646640 is an apocalyptic number.

12074646640 is a gapful number since it is divisible by the number (10) 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 12074646640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16473599640).

12074646640 is an abundant number, since it is smaller than the sum of its proper divisors (20872552640).

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

12074646640 is a wasteful number, since it uses less digits than its factorization.

12074646640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27399 (or 27386 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 12074646640 in words is "twelve billion, seventy-four million, six hundred forty-six thousand, six hundred forty".