3621664924393 has 4 divisors (see below), whose sum is σ = 3698721624960. Its totient is φ = 3544608223828.

The previous prime is 3621664924289. The next prime is 3621664924421. The reversal of 3621664924393 is 3934294661263.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3621664924393 - 2⁹ = 3621664923881 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3621664924093) 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, 38528350213 + ... + 38528350306.

It is an arithmetic number, because the mean of its divisors is an integer number (924680406240).

Almost surely, 2^{3621664924393} is an apocalyptic number.

It is an amenable number.

3621664924393 is a deficient number, since it is larger than the sum of its proper divisors (77056700567).

3621664924393 is an equidigital number, since it uses as much as digits as its factorization.

3621664924393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77056700566.

The product of its digits is 30233088, while the sum is 58.

The spelling of 3621664924393 in words is "three trillion, six hundred twenty-one billion, six hundred sixty-four million, nine hundred twenty-four thousand, three hundred ninety-three".