61061042720686 has 16 divisors (see below), whose sum is σ = 94547788973568. Its totient is φ = 29545147611000.

The previous prime is 61061042720611. The next prime is 61061042720701. The reversal of 61061042720686 is 68602724016016.

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, 5061840 + ... + 12155011.

It is an arithmetic number, because the mean of its divisors is an integer number (5909236810848).

Almost surely, 2^{61061042720686} is an apocalyptic number.

61061042720686 is a deficient number, since it is larger than the sum of its proper divisors (33486746252882).

61061042720686 is a wasteful number, since it uses less digits than its factorization.

61061042720686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17274087.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 61061042720686 in words is "sixty-one trillion, sixty-one billion, forty-two million, seven hundred twenty thousand, six hundred eighty-six".