2160061578 has 48 divisors (see below), whose sum is σ = 4872539880. Its totient is φ = 690738048.

The previous prime is 2160061577. The next prime is 2160061639. The reversal of 2160061578 is 8751600612.

2160061578 is a `hidden beast` number, since 21 + 6 + 0 + 0 + 61 + 578 = 666.

2160061578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1575534249 + 584527329 = 39693^2 + 24177^2 .

It is not an unprimeable number, because it can be changed into a prime (2160061577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68776 + ... + 95132.

Almost surely, 2^2160061578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2160061578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2436269940).

2160061578 is an abundant number, since it is smaller than the sum of its proper divisors (2712478302).

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

2160061578 is a wasteful number, since it uses less digits than its factorization.

2160061578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26551 (or 26548 counting only the distinct ones).

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

The square root of 2160061578 is about 46476.4626235689. The cubic root of 2160061578 is about 1292.6730977709.

The spelling of 2160061578 in words is "two billion, one hundred sixty million, sixty-one thousand, five hundred seventy-eight".