61727563405 has 8 divisors (see below), whose sum is σ = 74074973184. Its totient is φ = 49380786000.

The previous prime is 61727563393. The next prime is 61727563421. The reversal of 61727563405 is 50436572716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61727563405 - 2¹⁵ = 61727530637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92880 + ... + 363430.

It is an arithmetic number, because the mean of its divisors is an integer number (9259371648).

Almost surely, 2^61727563405 is an apocalyptic number.

It is an amenable number.

61727563405 is a deficient number, since it is larger than the sum of its proper divisors (12347409779).

61727563405 is a wasteful number, since it uses less digits than its factorization.

61727563405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316187.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 61727563405 in words is "sixty-one billion, seven hundred twenty-seven million, five hundred sixty-three thousand, four hundred five".