7993564653979 has 2 divisors, whose sum is σ = 7993564653980. Its totient is φ = 7993564653978.

The previous prime is 7993564653937. The next prime is 7993564654043. The reversal of 7993564653979 is 9793564653997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7993564653979 - 2³⁵ = 7959204915611 is a prime.

It is not a weakly prime, because it can be changed into another prime (7993564653929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3996782326989 + 3996782326990.

It is an arithmetic number, because the mean of its divisors is an integer number (3996782326990).

Almost surely, 2^{7993564653979} is an apocalyptic number.

7993564653979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7993564653979 is an equidigital number, since it uses as much as digits as its factorization.

7993564653979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10416243600, while the sum is 82.

The spelling of 7993564653979 in words is "seven trillion, nine hundred ninety-three billion, five hundred sixty-four million, six hundred fifty-three thousand, nine hundred seventy-nine".