4243401664 has 14 divisors (see below), whose sum is σ = 8420500304. Its totient is φ = 2121700800.

The previous prime is 4243401623. The next prime is 4243401667. The reversal of 4243401664 is 4661043424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243401667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33151512 + ... + 33151639.

Almost surely, 2^4243401664 is an apocalyptic number.

It is an amenable number.

4243401664 is a deficient number, since it is larger than the sum of its proper divisors (4177098640).

4243401664 is an equidigital number, since it uses as much as digits as its factorization.

4243401664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66303163 (or 66303153 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 4243401664 is about 65141.3974673556. The cubic root of 4243401664 is about 1618.9671900825.

The spelling of 4243401664 in words is "four billion, two hundred forty-three million, four hundred one thousand, six hundred sixty-four".