7768115461 has 2 divisors, whose sum is σ = 7768115462. Its totient is φ = 7768115460.

The previous prime is 7768115449. The next prime is 7768115521. The reversal of 7768115461 is 1645118677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5933620900 + 1834494561 = 77030^2 + 42831^2 .

It is a cyclic number.

It is not a de Polignac number, because 7768115461 - 2⁵ = 7768115429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7768115441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3884057730 + 3884057731.

It is an arithmetic number, because the mean of its divisors is an integer number (3884057731).

Almost surely, 2^7768115461 is an apocalyptic number.

It is an amenable number.

7768115461 is a deficient number, since it is larger than the sum of its proper divisors (1).

7768115461 is an equidigital number, since it uses as much as digits as its factorization.

7768115461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 46.

The square root of 7768115461 is about 88136.9131578818. The cubic root of 7768115461 is about 1980.4865196475.

The spelling of 7768115461 in words is "seven billion, seven hundred sixty-eight million, one hundred fifteen thousand, four hundred sixty-one".