6645360633541 has 8 divisors (see below), whose sum is σ = 7737994053504. Its totient is φ = 5588551260240.

The previous prime is 6645360633491. The next prime is 6645360633557. The reversal of 6645360633541 is 1453360635466.

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 6645360633541 - 2⁷ = 6645360633413 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 (6645360633641) 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, 8956011265 + ... + 8956012006.

It is an arithmetic number, because the mean of its divisors is an integer number (967249256688).

Almost surely, 2^{6645360633541} is an apocalyptic number.

It is an amenable number.

6645360633541 is a deficient number, since it is larger than the sum of its proper divisors (1092633419963).

6645360633541 is a wasteful number, since it uses less digits than its factorization.

6645360633541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17912023331.

The product of its (nonzero) digits is 13996800, while the sum is 52.

The spelling of 6645360633541 in words is "six trillion, six hundred forty-five billion, three hundred sixty million, six hundred thirty-three thousand, five hundred forty-one".