6681520170 has 128 divisors (see below), whose sum is σ = 19634630400. Its totient is φ = 1606397184.

The previous prime is 6681520103. The next prime is 6681520189. The reversal of 6681520170 is 710251866.

6681520170 is a `hidden beast` number, since 6 + 68 + 1 + 520 + 1 + 70 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128796 + ... + 173064.

It is an arithmetic number, because the mean of its divisors is an integer number (153395550).

Almost surely, 2^6681520170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6681520170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9817315200).

6681520170 is an abundant number, since it is smaller than the sum of its proper divisors (12953110230).

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

6681520170 is a wasteful number, since it uses less digits than its factorization.

6681520170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44341 (or 44335 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 6681520170 is about 81740.5662446744. The cubic root of 6681520170 is about 1883.4687891365.

It can be divided in two parts, 6681 and 520170, that added together give a triangular number (526851 = T₁₀₂₆).

The spelling of 6681520170 in words is "six billion, six hundred eighty-one million, five hundred twenty thousand, one hundred seventy".