7081798771 has 2 divisors, whose sum is σ = 7081798772. Its totient is φ = 7081798770.

The previous prime is 7081798747. The next prime is 7081798777. The reversal of 7081798771 is 1778971807.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7081798771 - 2⁷ = 7081798643 is a prime.

It is a super-2 number, since 2×7081798771² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7081798777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3540899385 + 3540899386.

It is an arithmetic number, because the mean of its divisors is an integer number (3540899386).

Almost surely, 2^7081798771 is an apocalyptic number.

7081798771 is a deficient number, since it is larger than the sum of its proper divisors (1).

7081798771 is an equidigital number, since it uses as much as digits as its factorization.

7081798771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382976, while the sum is 55.

The square root of 7081798771 is about 84153.4240004529. The cubic root of 7081798771 is about 1920.3535564004.

The spelling of 7081798771 in words is "seven billion, eighty-one million, seven hundred ninety-eight thousand, seven hundred seventy-one".