12148501640 has 96 divisors (see below), whose sum is σ = 30494197440. Its totient is φ = 4351585920.

The previous prime is 12148501627. The next prime is 12148501649. The reversal of 12148501640 is 4610584121.

It is a junction number, because it is equal to n+sod(n) for n = 12148501597 and 12148501606.

It is not an unprimeable number, because it can be changed into a prime (12148501649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305549 + ... + 343011.

It is an arithmetic number, because the mean of its divisors is an integer number (317647890).

Almost surely, 2^12148501640 is an apocalyptic number.

12148501640 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 12148501640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15247098720).

12148501640 is an abundant number, since it is smaller than the sum of its proper divisors (18345695800).

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

12148501640 is a wasteful number, since it uses less digits than its factorization.

12148501640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37563 (or 37548 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The spelling of 12148501640 in words is "twelve billion, one hundred forty-eight million, five hundred one thousand, six hundred forty".