4465555644 has 24 divisors (see below), whose sum is σ = 11366869248. Its totient is φ = 1353198640.

The previous prime is 4465555621. The next prime is 4465555711.

It is a happy number.

4465555644 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 4465555593 and 4465555602.

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, 16914852 + ... + 16915115.

It is an arithmetic number, because the mean of its divisors is an integer number (473619552).

Almost surely, 2^4465555644 is an apocalyptic number.

4465555644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4465555644 is an abundant number, since it is smaller than the sum of its proper divisors (6901313604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4465555644 is a wasteful number, since it uses less digits than its factorization.

4465555644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33829985 (or 33829983 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 48.

The square root of 4465555644 is about 66824.8130861583. The cubic root of 4465555644 is about 1646.7405066864.

The spelling of 4465555644 in words is "four billion, four hundred sixty-five million, five hundred fifty-five thousand, six hundred forty-four".