3621843621023 has 4 divisors (see below), whose sum is σ = 3635614889808. Its totient is φ = 3608072352240.

The previous prime is 3621843620953. The next prime is 3621843621031. The reversal of 3621843621023 is 3201263481263.

It is a happy number.

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 3621843621023 - 2¹⁸ = 3621843358879 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 (3621843671023) 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, 6885633998 + ... + 6885634523.

It is an arithmetic number, because the mean of its divisors is an integer number (908903722452).

Almost surely, 2^{3621843621023} is an apocalyptic number.

3621843621023 is a deficient number, since it is larger than the sum of its proper divisors (13771268785).

3621843621023 is a wasteful number, since it uses less digits than its factorization.

3621843621023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13771268784.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 3621843621023 in words is "three trillion, six hundred twenty-one billion, eight hundred forty-three million, six hundred twenty-one thousand, twenty-three".