5661061056 has 112 divisors (see below), whose sum is σ = 19020007680. Its totient is φ = 1617442560.

The previous prime is 5661061051. The next prime is 5661061097. The reversal of 5661061056 is 6501601665.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×5661061056² = 64095224559519670272, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 5661061056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661061051) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 221910 + ... + 246101.

Almost surely, 2^5661061056 is an apocalyptic number.

5661061056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

5661061056 is an abundant number, since it is smaller than the sum of its proper divisors (13358946624).

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

5661061056 is a wasteful number, since it uses less digits than its factorization.

5661061056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468039 (or 468023 counting only the distinct ones).

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

The square root of 5661061056 is about 75240.0229665037. The cubic root of 5661061056 is about 1782.2390138428.

The spelling of 5661061056 in words is "five billion, six hundred sixty-one million, sixty-one thousand, fifty-six".