7993564653997 has 8 divisors (see below), whose sum is σ = 8651712809600. Its totient is φ = 7341596293680.

The previous prime is 7993564653979. The next prime is 7993564654043.

7993564653997 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7993564653997 - 2³⁹ = 7443808840109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7993564653997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7993564653937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1544946129 + ... + 1544951302.

It is an arithmetic number, because the mean of its divisors is an integer number (1081464101200).

Almost surely, 2^{7993564653997} is an apocalyptic number.

It is an amenable number.

7993564653997 is a deficient number, since it is larger than the sum of its proper divisors (658148155603).

7993564653997 is a wasteful number, since it uses less digits than its factorization.

7993564653997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089897643.

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

The spelling of 7993564653997 in words is "seven trillion, nine hundred ninety-three billion, five hundred sixty-four million, six hundred fifty-three thousand, nine hundred ninety-seven".