68044141561 has 32 divisors (see below), whose sum is σ = 79976782080. Its totient is φ = 57291897600.

The previous prime is 68044141541. The next prime is 68044141573. The reversal of 68044141561 is 16514144086.

It is a cyclic number.

It is not a de Polignac number, because 68044141561 - 2¹⁵ = 68044108793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68044141541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 797415 + ... + 878611.

It is an arithmetic number, because the mean of its divisors is an integer number (2499274440).

Almost surely, 2^68044141561 is an apocalyptic number.

It is an amenable number.

68044141561 is a deficient number, since it is larger than the sum of its proper divisors (11932640519).

68044141561 is a wasteful number, since it uses less digits than its factorization.

68044141561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81345.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 68044141561 in words is "sixty-eight billion, forty-four million, one hundred forty-one thousand, five hundred sixty-one".