7978008797 has 12 divisors (see below), whose sum is σ = 8781819228. Its totient is φ = 7242312000.

The previous prime is 7978008793. The next prime is 7978008799.

7978008797 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 2945667076 + 5032341721 = 54274^2 + 70939^2 .

It is not a de Polignac number, because 7978008797 - 2² = 7978008793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978008793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37793 + ... + 131849.

It is an arithmetic number, because the mean of its divisors is an integer number (731818269).

Almost surely, 2^7978008797 is an apocalyptic number.

It is an amenable number.

7978008797 is a deficient number, since it is larger than the sum of its proper divisors (803810431).

7978008797 is a wasteful number, since it uses less digits than its factorization.

7978008797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94780 (or 94769 counting only the distinct ones).

The product of its (nonzero) digits is 12446784, while the sum is 62.

The square root of 7978008797 is about 89319.6999379196. The cubic root of 7978008797 is about 1998.1657179690.

The spelling of 7978008797 in words is "seven billion, nine hundred seventy-eight million, eight thousand, seven hundred ninety-seven".