61041456565 has 16 divisors (see below), whose sum is σ = 75137870592. Its totient is φ = 47583573184.

The previous prime is 61041456547. The next prime is 61041456569. The reversal of 61041456565 is 56565414016.

It is a cyclic number.

It is not a de Polignac number, because 61041456565 - 2²³ = 61033067957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61041456569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518794 + ... + 625483.

It is an arithmetic number, because the mean of its divisors is an integer number (4696116912).

Almost surely, 2^61041456565 is an apocalyptic number.

It is an amenable number.

61041456565 is a deficient number, since it is larger than the sum of its proper divisors (14096414027).

61041456565 is a wasteful number, since it uses less digits than its factorization.

61041456565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144556.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 61041456565 in words is "sixty-one billion, forty-one million, four hundred fifty-six thousand, five hundred sixty-five".