7786630081 has 4 divisors (see below), whose sum is σ = 7787117700. Its totient is φ = 7786142464.

The previous prime is 7786630069. The next prime is 7786630129. The reversal of 7786630081 is 1800366877.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4398342400 + 3388287681 = 66320^2 + 58209^2 .

It is a cyclic number.

It is not a de Polignac number, because 7786630081 - 2⁷ = 7786629953 is a prime.

It is a super-2 number, since 2×7786630081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7786630021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219016 + ... + 252073.

It is an arithmetic number, because the mean of its divisors is an integer number (1946779425).

Almost surely, 2^7786630081 is an apocalyptic number.

It is an amenable number.

7786630081 is a deficient number, since it is larger than the sum of its proper divisors (487619).

7786630081 is a wasteful number, since it uses less digits than its factorization.

7786630081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487618.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 7786630081 is about 88241.8839384110. The cubic root of 7786630081 is about 1982.0587097284.

The spelling of 7786630081 in words is "seven billion, seven hundred eighty-six million, six hundred thirty thousand, eighty-one".