7700777401 has 2 divisors, whose sum is σ = 7700777402. Its totient is φ = 7700777400.

The previous prime is 7700777389. The next prime is 7700777417. The reversal of 7700777401 is 1047770077.

It is a happy number.

7700777401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5296346176 + 2404431225 = 72776^2 + 49035^2 .

It is an emirp because it is prime and its reverse (1047770077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7700777401 - 2¹¹ = 7700775353 is a prime.

It is not a weakly prime, because it can be changed into another prime (7700777431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3850388700 + 3850388701.

It is an arithmetic number, because the mean of its divisors is an integer number (3850388701).

Almost surely, 2^7700777401 is an apocalyptic number.

It is an amenable number.

7700777401 is a deficient number, since it is larger than the sum of its proper divisors (1).

7700777401 is an equidigital number, since it uses as much as digits as its factorization.

7700777401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67228, while the sum is 40.

The square root of 7700777401 is about 87754.0734154261. The cubic root of 7700777401 is about 1974.7472753373.

The spelling of 7700777401 in words is "seven billion, seven hundred million, seven hundred seventy-seven thousand, four hundred one".