12878364040 has 32 divisors (see below), whose sum is σ = 29683062360. Its totient is φ = 5025702400.

The previous prime is 12878364019. The next prime is 12878364043. The reversal of 12878364040 is 4046387821.

It can be written as a sum of positive squares in 4 ways, for example, as 10642398244 + 2235965796 = 103162^2 + 47286^2 .

It is not an unprimeable number, because it can be changed into a prime (12878364043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3924691 + ... + 3927970.

Almost surely, 2^12878364040 is an apocalyptic number.

12878364040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12878364040 is an abundant number, since it is smaller than the sum of its proper divisors (16804698320).

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

12878364040 is a wasteful number, since it uses less digits than its factorization.

12878364040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7852713 (or 7852709 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 12878364040 in words is "twelve billion, eight hundred seventy-eight million, three hundred sixty-four thousand, forty".