6516441604 has 24 divisors (see below), whose sum is σ = 11925704448. Its totient is φ = 3109719360.

The previous prime is 6516441601. The next prime is 6516441611. The reversal of 6516441604 is 4061446156.

It is a super-2 number, since 2×6516441604² = 84928022356684185632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6516441601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35452 + ... + 119539.

It is an arithmetic number, because the mean of its divisors is an integer number (496904352).

Almost surely, 2^6516441604 is an apocalyptic number.

It is an amenable number.

6516441604 is a deficient number, since it is larger than the sum of its proper divisors (5409262844).

6516441604 is a wasteful number, since it uses less digits than its factorization.

6516441604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155475 (or 155473 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 6516441604 is about 80724.4795833333. The cubic root of 6516441604 is about 1867.8278040386.

It can be divided in two parts, 651 and 6441604, that added together give a triangular number (6442255 = T₃₅₈₉).

The spelling of 6516441604 in words is "six billion, five hundred sixteen million, four hundred forty-one thousand, six hundred four".