6656100516 has 72 divisors (see below), whose sum is σ = 18219723704. Its totient is φ = 2036689920.

The previous prime is 6656100511. The next prime is 6656100547. The reversal of 6656100516 is 6150016566.

It can be written as a sum of positive squares in 4 ways, for example, as 36650916 + 6619449600 = 6054^2 + 81360^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (6656100511) 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 23 ways as a sum of consecutive naturals, for example, 45420 + ... + 123996.

Almost surely, 2^6656100516 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 6656100516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9109861852).

6656100516 is an abundant number, since it is smaller than the sum of its proper divisors (11563623188).

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

6656100516 is a wasteful number, since it uses less digits than its factorization.

6656100516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78781 (or 78776 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 6656100516 is about 81584.9282404538. The cubic root of 6656100516 is about 1881.0772191497.

The spelling of 6656100516 in words is "six billion, six hundred fifty-six million, one hundred thousand, five hundred sixteen".