61543053576 has 48 divisors (see below), whose sum is σ = 168551919900. Its totient is φ = 20283850752.

The previous prime is 61543053547. The next prime is 61543053581. The reversal of 61543053576 is 67535034516.

61543053576 is a `hidden beast` number, since 6 + 1 + 5 + 43 + 0 + 535 + 76 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61021844676 + 521208900 = 247026^2 + 22830^2 .

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, 4795641 + ... + 4808456.

Almost surely, 2^61543053576 is an apocalyptic number.

It is an amenable number.

61543053576 is an abundant number, since it is smaller than the sum of its proper divisors (107008866324).

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

61543053576 is a wasteful number, since it uses less digits than its factorization.

61543053576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604198 (or 9604191 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 45.

The spelling of 61543053576 in words is "sixty-one billion, five hundred forty-three million, fifty-three thousand, five hundred seventy-six".