6561016160 has 72 divisors (see below), whose sum is σ = 16359292656. Its totient is φ = 2486257920.

The previous prime is 6561016129. The next prime is 6561016199. The reversal of 6561016160 is 616101656.

It is a super-2 number, since 2×6561016160² = 86093866103562291200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 965 + ... + 114555.

It is an arithmetic number, because the mean of its divisors is an integer number (227212398).

Almost surely, 2^6561016160 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 6561016160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8179646328).

6561016160 is an abundant number, since it is smaller than the sum of its proper divisors (9798276496).

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

6561016160 is a wasteful number, since it uses less digits than its factorization.

6561016160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113644 (or 113617 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 6561016160 is about 81000.0997530250. The cubic root of 6561016160 is about 1872.0769777438.

The spelling of 6561016160 in words is "six billion, five hundred sixty-one million, sixteen thousand, one hundred sixty".