61543116 has 36 divisors (see below), whose sum is σ = 158881632. Its totient is φ = 20077344.

The previous prime is 61543103. The next prime is 61543127. The reversal of 61543116 is 61134516.

61543116 is a `hidden beast` number, since 6 + 1 + 543 + 116 = 666.

61543116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61543116.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16495 + ... + 19878.

Almost surely, 2^61543116 is an apocalyptic number.

It is an amenable number.

61543116 is an abundant number, since it is smaller than the sum of its proper divisors (97338516).

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

61543116 is a wasteful number, since it uses less digits than its factorization.

61543116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36430 (or 36425 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 61543116 is about 7844.9420647956. The cubic root of 61543116 is about 394.8145601809.

The spelling of 61543116 in words is "sixty-one million, five hundred forty-three thousand, one hundred sixteen".