61630580656917 has 6 divisors (see below), whose sum is σ = 89021949837782. Its totient is φ = 41087053771272.

The previous prime is 61630580656903. The next prime is 61630580656919. The reversal of 61630580656917 is 71965608503616.

61630580656917 is a `hidden beast` number, since 6 + 1 + 6 + 3 + 0 + 58 + 0 + 6 + 569 + 17 = 666.

61630580656917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 49796746735761 + 11833833921156 = 7056681^2 + 3440034^2 .

It is not a de Polignac number, because 61630580656917 - 2⁸ = 61630580656661 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 (61630580656919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3423921147598 + ... + 3423921147615.

Almost surely, 2^{61630580656917} is an apocalyptic number.

It is an amenable number.

61630580656917 is a deficient number, since it is larger than the sum of its proper divisors (27391369180865).

61630580656917 is a wasteful number, since it uses less digits than its factorization.

61630580656917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847842295219 (or 6847842295216 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 61630580656917 in words is "sixty-one trillion, six hundred thirty billion, five hundred eighty million, six hundred fifty-six thousand, nine hundred seventeen".