7776000000001 has 4 divisors (see below), whose sum is σ = 7789960503252. Its totient is φ = 7762039496752.

The previous prime is 7775999999981. The next prime is 7776000000007. The reversal of 7776000000001 is 1000000006777.

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 1216997286976 + 6559002713025 = 1103176^2 + 2561055^2 .

It is a cyclic number.

It is not a de Polignac number, because 7776000000001 - 2⁹ = 7775999999489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7775999999897 and 7775999999906.

It is not an unprimeable number, because it can be changed into a prime (7776000000007) 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, 6980250790 + ... + 6980251903.

It is an arithmetic number, because the mean of its divisors is an integer number (1947490125813).

Almost surely, 2^{7776000000001} is an apocalyptic number.

It is an amenable number.

7776000000001 is a deficient number, since it is larger than the sum of its proper divisors (13960503251).

7776000000001 is a wasteful number, since it uses less digits than its factorization.

7776000000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13960503250.

The product of its (nonzero) digits is 2058, while the sum is 28.

Adding to 7776000000001 its reverse (1000000006777), we get a palindrome (8776000006778).

The spelling of 7776000000001 in words is "seven trillion, seven hundred seventy-six billion, one", and thus it is an aban number.