2104553645 has 8 divisors (see below), whose sum is σ = 2544743520. Its totient is φ = 1670790160.

The previous prime is 2104553623. The next prime is 2104553701. The reversal of 2104553645 is 5463554012.

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

It is not a de Polignac number, because 2104553645 - 2¹² = 2104549549 is a prime.

It is a super-3 number, since 3×2104553645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1605875 + ... + 1607184.

It is an arithmetic number, because the mean of its divisors is an integer number (318092940).

Almost surely, 2^2104553645 is an apocalyptic number.

It is an amenable number.

2104553645 is a deficient number, since it is larger than the sum of its proper divisors (440189875).

2104553645 is a wasteful number, since it uses less digits than its factorization.

2104553645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213195.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 2104553645 is about 45875.4143850494. The cubic root of 2104553645 is about 1281.5041004020.

The spelling of 2104553645 in words is "two billion, one hundred four million, five hundred fifty-three thousand, six hundred forty-five".