3645448543474 has 4 divisors (see below), whose sum is σ = 5468172815214. Its totient is φ = 1822724271736.

The previous prime is 3645448543403. The next prime is 3645448543501. The reversal of 3645448543474 is 4743458445463.

It is a happy number.

3645448543474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 1960579642849 + 1684868900625 = 1400207^2 + 1298025^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911362135867 + ... + 911362135870.

Almost surely, 2^{3645448543474} is an apocalyptic number.

3645448543474 is a deficient number, since it is larger than the sum of its proper divisors (1822724271740).

3645448543474 is a wasteful number, since it uses less digits than its factorization.

3645448543474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822724271739.

The product of its digits is 309657600, while the sum is 61.

The spelling of 3645448543474 in words is "three trillion, six hundred forty-five billion, four hundred forty-eight million, five hundred forty-three thousand, four hundred seventy-four".