7095661981 has 2 divisors, whose sum is σ = 7095661982. Its totient is φ = 7095661980.

The previous prime is 7095661973. The next prime is 7095662003. The reversal of 7095661981 is 1891665907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6844914756 + 250747225 = 82734^2 + 15835^2 .

It is a cyclic number.

It is not a de Polignac number, because 7095661981 - 2³ = 7095661973 is a prime.

It is a super-2 number, since 2×7095661981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7095661901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3547830990 + 3547830991.

It is an arithmetic number, because the mean of its divisors is an integer number (3547830991).

Almost surely, 2^7095661981 is an apocalyptic number.

It is an amenable number.

7095661981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7095661981 is an equidigital number, since it uses as much as digits as its factorization.

7095661981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 7095661981 is about 84235.7523917250. The cubic root of 7095661981 is about 1921.6058235428.

The spelling of 7095661981 in words is "seven billion, ninety-five million, six hundred sixty-one thousand, nine hundred eighty-one".