1012786978266 has 96 divisors (see below), whose sum is σ = 2589156950016. Its totient is φ = 279989460000.

The previous prime is 1012786978253. The next prime is 1012786978283. The reversal of 1012786978266 is 6628796872101.

1012786978266 is a `hidden beast` number, since 10 + 1 + 278 + 6 + 97 + 8 + 266 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31040301 + ... + 31072911.

It is an arithmetic number, because the mean of its divisors is an integer number (26970384896).

Almost surely, 2^{1012786978266} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012786978266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294578475008).

1012786978266 is an abundant number, since it is smaller than the sum of its proper divisors (1576369971750).

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

1012786978266 is a wasteful number, since it uses less digits than its factorization.

1012786978266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40608 (or 40605 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 1012786978266 in words is "one trillion, twelve billion, seven hundred eighty-six million, nine hundred seventy-eight thousand, two hundred sixty-six".