61061042720687 has 8 divisors (see below), whose sum is σ = 61313716670592. Its totient is φ = 60808600692000.

The previous prime is 61061042720611. The next prime is 61061042720701. The reversal of 61061042720687 is 78602724016016.

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

It is a cyclic number.

It is not a de Polignac number, because 61061042720687 - 2¹² = 61061042716591 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 (61061042770687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57452639 + ... + 58505792.

It is an arithmetic number, because the mean of its divisors is an integer number (7664214583824).

Almost surely, 2^{61061042720687} is an apocalyptic number.

61061042720687 is a deficient number, since it is larger than the sum of its proper divisors (252673949905).

61061042720687 is a wasteful number, since it uses less digits than its factorization.

61061042720687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115960609.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 61061042720687 in words is "sixty-one trillion, sixty-one billion, forty-two million, seven hundred twenty thousand, six hundred eighty-seven".