61727811043 has 4 divisors (see below), whose sum is σ = 61728363568. Its totient is φ = 61727258520.

The previous prime is 61727811023. The next prime is 61727811077. The reversal of 61727811043 is 34011872716.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61727811043 - 2⁵ = 61727811011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61727810987 and 61727811005.

It is not an unprimeable number, because it can be changed into a prime (61727811023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43071 + ... + 353992.

It is an arithmetic number, because the mean of its divisors is an integer number (15432090892).

Almost surely, 2^61727811043 is an apocalyptic number.

61727811043 is a deficient number, since it is larger than the sum of its proper divisors (552525).

61727811043 is a wasteful number, since it uses less digits than its factorization.

61727811043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552524.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 61727811043 in words is "sixty-one billion, seven hundred twenty-seven million, eight hundred eleven thousand, forty-three".