12486678436240 has 40 divisors (see below), whose sum is σ = 29036873896128. Its totient is φ = 4993751541120.

The previous prime is 12486678436213. The next prime is 12486678436241. The reversal of 12486678436240 is 4263487668421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×12486678436240² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12486678436241) 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 7 ways as a sum of consecutive naturals, for example, 13935202 + ... + 14804161.

Almost surely, 2^{12486678436240} is an apocalyptic number.

12486678436240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12486678436240 is an abundant number, since it is smaller than the sum of its proper divisors (16550195459888).

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

12486678436240 is a wasteful number, since it uses less digits than its factorization.

12486678436240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28744807 (or 28744801 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 61.

The spelling of 12486678436240 in words is "twelve trillion, four hundred eighty-six billion, six hundred seventy-eight million, four hundred thirty-six thousand, two hundred forty".