4471776645 has 128 divisors (see below), whose sum is σ = 8883302400. Its totient is φ = 1874644992.

The previous prime is 4471776623. The next prime is 4471776649. The reversal of 4471776645 is 5466771744.

It is a happy number.

4471776645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4471776645 - 2⁶ = 4471776581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4471776649) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 16623571 + ... + 16623839.

It is an arithmetic number, because the mean of its divisors is an integer number (69400800).

Almost surely, 2^4471776645 is an apocalyptic number.

It is an amenable number.

4471776645 is a deficient number, since it is larger than the sum of its proper divisors (4411525755).

4471776645 is a wasteful number, since it uses less digits than its factorization.

4471776645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 3951360, while the sum is 51.

The square root of 4471776645 is about 66871.3439748298. The cubic root of 4471776645 is about 1647.5048476151.

The spelling of 4471776645 in words is "four billion, four hundred seventy-one million, seven hundred seventy-six thousand, six hundred forty-five".