1000066676778 has 24 divisors (see below), whose sum is σ = 2333488913028. Its totient is φ = 307712823552.

The previous prime is 1000066676773. The next prime is 1000066676783. The reversal of 1000066676778 is 8776766600001.

It is a happy number.

1000066676778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1000066676773) and next prime (1000066676783).

It can be written as a sum of positive squares in 2 ways, for example, as 999746016129 + 320660649 = 999873^2 + 17907^2 .

It is a super-2 number, since 2×1000066676778² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000066676773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2136894375 + ... + 2136894842.

Almost surely, 2^{1000066676778} is an apocalyptic number.

1000066676778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1000066676778 is an abundant number, since it is smaller than the sum of its proper divisors (1333422236250).

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

1000066676778 is a wasteful number, since it uses less digits than its factorization.

1000066676778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273789238 (or 4273789235 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 1000066676778 in words is "one trillion, sixty-six million, six hundred seventy-six thousand, seven hundred seventy-eight".