2012685858778 has 8 divisors (see below), whose sum is σ = 3450318615072. Its totient is φ = 862579653756.

The previous prime is 2012685858769. The next prime is 2012685858817. The reversal of 2012685858778 is 8778585862102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2012685858778² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71881637800 + ... + 71881637827.

It is an arithmetic number, because the mean of its divisors is an integer number (431289826884).

Almost surely, 2^{2012685858778} is an apocalyptic number.

2012685858778 is a deficient number, since it is larger than the sum of its proper divisors (1437632756294).

2012685858778 is a wasteful number, since it uses less digits than its factorization.

2012685858778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143763275636.

The product of its (nonzero) digits is 120422400, while the sum is 67.

The spelling of 2012685858778 in words is "two trillion, twelve billion, six hundred eighty-five million, eight hundred fifty-eight thousand, seven hundred seventy-eight".