61543532252 has 12 divisors (see below), whose sum is σ = 108006286416. Its totient is φ = 30684593280.

The previous prime is 61543532251. The next prime is 61543532287. The reversal of 61543532252 is 25223534516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61543532251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21791624 + ... + 21794447.

It is an arithmetic number, because the mean of its divisors is an integer number (9000523868).

Almost surely, 2^61543532252 is an apocalyptic number.

It is an amenable number.

61543532252 is a deficient number, since it is larger than the sum of its proper divisors (46462754164).

61543532252 is a wasteful number, since it uses less digits than its factorization.

61543532252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43586428 (or 43586426 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

The spelling of 61543532252 in words is "sixty-one billion, five hundred forty-three million, five hundred thirty-two thousand, two hundred fifty-two".