12148878387 has 32 divisors (see below), whose sum is σ = 16983912960. Its totient is φ = 7717582080.

The previous prime is 12148878383. The next prime is 12148878439. The reversal of 12148878387 is 78387884121.

It is not a de Polignac number, because 12148878387 - 2² = 12148878383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12148878383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1134018 + ... + 1144680.

It is an arithmetic number, because the mean of its divisors is an integer number (530747280).

Almost surely, 2^12148878387 is an apocalyptic number.

12148878387 is a deficient number, since it is larger than the sum of its proper divisors (4835034573).

12148878387 is a wasteful number, since it uses less digits than its factorization.

12148878387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923.

The product of its digits is 4816896, while the sum is 57.

The spelling of 12148878387 in words is "twelve billion, one hundred forty-eight million, eight hundred seventy-eight thousand, three hundred eighty-seven".