7797862643 has 2 divisors, whose sum is σ = 7797862644. Its totient is φ = 7797862642.

The previous prime is 7797862607. The next prime is 7797862673. The reversal of 7797862643 is 3462687977.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7797862643 - 2²⁴ = 7781085427 is a prime.

It is not a weakly prime, because it can be changed into another prime (7797862673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3898931321 + 3898931322.

It is an arithmetic number, because the mean of its divisors is an integer number (3898931322).

Almost surely, 2^7797862643 is an apocalyptic number.

7797862643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7797862643 is an equidigital number, since it uses as much as digits as its factorization.

7797862643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21337344, while the sum is 59.

The square root of 7797862643 is about 88305.5074330022. The cubic root of 7797862643 is about 1983.0113212464.

The spelling of 7797862643 in words is "seven billion, seven hundred ninety-seven million, eight hundred sixty-two thousand, six hundred forty-three".