5661064356 has 12 divisors (see below), whose sum is σ = 13209150192. Its totient is φ = 1887021448.

The previous prime is 5661064327. The next prime is 5661064361. The reversal of 5661064356 is 6534601665.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235877670 + ... + 235877693.

It is an arithmetic number, because the mean of its divisors is an integer number (1100762516).

Almost surely, 2^5661064356 is an apocalyptic number.

It is an amenable number.

5661064356 is an abundant number, since it is smaller than the sum of its proper divisors (7548085836).

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

5661064356 is a wasteful number, since it uses less digits than its factorization.

5661064356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471755370 (or 471755368 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 5661064356 is about 75240.0448963183. The cubic root of 5661064356 is about 1782.2393601493.

The spelling of 5661064356 in words is "five billion, six hundred sixty-one million, sixty-four thousand, three hundred fifty-six".