61727666832 has 60 divisors (see below), whose sum is σ = 186040334844. Its totient is φ = 18993127680.

The previous prime is 61727666789. The next prime is 61727666837. The reversal of 61727666832 is 23866672716.

It can be written as a sum of positive squares in 2 ways, for example, as 13334706576 + 48392960256 = 115476^2 + 219984^2 .

It is not an unprimeable number, because it can be changed into a prime (61727666837) 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 11 ways as a sum of consecutive naturals, for example, 16485219 + ... + 16488962.

Almost surely, 2^61727666832 is an apocalyptic number.

It is an amenable number.

61727666832 is an abundant number, since it is smaller than the sum of its proper divisors (124312668012).

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

61727666832 is a wasteful number, since it uses less digits than its factorization.

61727666832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32974208 (or 32974199 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 61727666832 in words is "sixty-one billion, seven hundred twenty-seven million, six hundred sixty-six thousand, eight hundred thirty-two".