4021320616 has 8 divisors (see below), whose sum is σ = 7539976170. Its totient is φ = 2010660304.

The previous prime is 4021320593. The next prime is 4021320619. The reversal of 4021320616 is 6160231204.

It can be written as a sum of positive squares in only one way, i.e., 2782984516 + 1238336100 = 52754^2 + 35190^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (4021320619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251332531 + ... + 251332546.

Almost surely, 2^4021320616 is an apocalyptic number.

It is an amenable number.

4021320616 is a deficient number, since it is larger than the sum of its proper divisors (3518655554).

4021320616 is a wasteful number, since it uses less digits than its factorization.

4021320616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502665083 (or 502665079 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 4021320616 is about 63413.8834641122. The cubic root of 4021320616 is about 1590.2164197849.

The spelling of 4021320616 in words is "four billion, twenty-one million, three hundred twenty thousand, six hundred sixteen".