61340681717 has 8 divisors (see below), whose sum is σ = 70105381056. Its totient is φ = 52576418592.

The previous prime is 61340681711. The next prime is 61340681723. The reversal of 61340681717 is 71718604316.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61340681711) and next prime (61340681723).

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 61340681717 - 2¹⁸ = 61340419573 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 (61340681711) 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, 289298 + ... + 454284.

It is an arithmetic number, because the mean of its divisors is an integer number (8763172632).

Almost surely, 2^61340681717 is an apocalyptic number.

It is an amenable number.

61340681717 is a deficient number, since it is larger than the sum of its proper divisors (8764699339).

61340681717 is a wasteful number, since it uses less digits than its factorization.

61340681717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218107.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 61340681717 in words is "sixty-one billion, three hundred forty million, six hundred eighty-one thousand, seven hundred seventeen".