8621064362399 has 4 divisors (see below), whose sum is σ = 8821554231336. Its totient is φ = 8420574493464.

The previous prime is 8621064362387. The next prime is 8621064362441. The reversal of 8621064362399 is 9932634601268.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8621064362399 - 2⁴⁰ = 7521552734623 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 (8621064362359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100244934404 + ... + 100244934489.

It is an arithmetic number, because the mean of its divisors is an integer number (2205388557834).

Almost surely, 2^{8621064362399} is an apocalyptic number.

8621064362399 is a deficient number, since it is larger than the sum of its proper divisors (200489868937).

8621064362399 is a wasteful number, since it uses less digits than its factorization.

8621064362399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200489868936.

The product of its (nonzero) digits is 20155392, while the sum is 59.

The spelling of 8621064362399 in words is "eight trillion, six hundred twenty-one billion, sixty-four million, three hundred sixty-two thousand, three hundred ninety-nine".