7880517361 has 2 divisors, whose sum is σ = 7880517362. Its totient is φ = 7880517360.

The previous prime is 7880517329. The next prime is 7880517367. The reversal of 7880517361 is 1637150887.

7880517361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6034182400 + 1846334961 = 77680^2 + 42969^2 .

It is an emirp because it is prime and its reverse (1637150887) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7880517361 - 2⁵ = 7880517329 is a prime.

It is not a weakly prime, because it can be changed into another prime (7880517367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3940258680 + 3940258681.

It is an arithmetic number, because the mean of its divisors is an integer number (3940258681).

Almost surely, 2^7880517361 is an apocalyptic number.

It is an amenable number.

7880517361 is a deficient number, since it is larger than the sum of its proper divisors (1).

7880517361 is an equidigital number, since it uses as much as digits as its factorization.

7880517361 is an evil number, because the sum of its binary digits is even.

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

The square root of 7880517361 is about 88772.2781109058. The cubic root of 7880517361 is about 1989.9931281801.

The spelling of 7880517361 in words is "seven billion, eight hundred eighty million, five hundred seventeen thousand, three hundred sixty-one".