3645448543473 has 24 divisors (see below), whose sum is σ = 5343513821184. Its totient is φ = 2209001747040.

The previous prime is 3645448543403. The next prime is 3645448543501. The reversal of 3645448543473 is 3743458445463.

3645448543473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3645448543473 - 2⁹ = 3645448542961 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3645448543403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1412511 + ... + 3047307.

It is an arithmetic number, because the mean of its divisors is an integer number (222646409216).

Almost surely, 2^{3645448543473} is an apocalyptic number.

3645448543473 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3645448543473 is a deficient number, since it is larger than the sum of its proper divisors (1698065277711).

3645448543473 is a wasteful number, since it uses less digits than its factorization.

3645448543473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640965 (or 1640954 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 60.

The spelling of 3645448543473 in words is "three trillion, six hundred forty-five billion, four hundred forty-eight million, five hundred forty-three thousand, four hundred seventy-three".