12682780402818 has 16 divisors (see below), whose sum is σ = 26183804702976. Its totient is φ = 4091219484720.

The previous prime is 12682780402759. The next prime is 12682780402837. The reversal of 12682780402818 is 81820408728621.

It is a super-2 number, since 2×12682780402818² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34093495521 + ... + 34093495892.

It is an arithmetic number, because the mean of its divisors is an integer number (1636487793936).

Almost surely, 2^{12682780402818} is an apocalyptic number.

12682780402818 is an abundant number, since it is smaller than the sum of its proper divisors (13501024300158).

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

12682780402818 is a wasteful number, since it uses less digits than its factorization.

12682780402818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68186991449.

The product of its (nonzero) digits is 5505024, while the sum is 57.

The spelling of 12682780402818 in words is "twelve trillion, six hundred eighty-two billion, seven hundred eighty million, four hundred two thousand, eight hundred eighteen".