6516923616 has 576 divisors, whose sum is σ = 23775897600. Its totient is φ = 1650475008.

The previous prime is 6516923597. The next prime is 6516923617. The reversal of 6516923616 is 6163296156.

6516923616 is a `hidden beast` number, since 6 + 5 + 1 + 6 + 9 + 23 + 616 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6516923617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 78517111 + ... + 78517193.

It is an arithmetic number, because the mean of its divisors is an integer number (41277600).

Almost surely, 2^6516923616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6516923616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11887948800).

6516923616 is an abundant number, since it is smaller than the sum of its proper divisors (17258973984).

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

6516923616 is a wasteful number, since it uses less digits than its factorization.

6516923616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 220 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 6516923616 is about 80727.4650661099. The cubic root of 6516923616 is about 1867.8738564330.

The spelling of 6516923616 in words is "six billion, five hundred sixteen million, nine hundred twenty-three thousand, six hundred sixteen".