61685493417 has 24 divisors (see below), whose sum is σ = 90756244800. Its totient is φ = 40362720480.

The previous prime is 61685493403. The next prime is 61685493427. The reversal of 61685493417 is 71439458616.

61685493417 is a `hidden beast` number, since 6 + 1 + 68 + 549 + 34 + 1 + 7 = 666.

It is not a de Polignac number, because 61685493417 - 2⁸ = 61685493161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61685493427) 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 23 ways as a sum of consecutive naturals, for example, 136084 + ... + 376682.

It is an arithmetic number, because the mean of its divisors is an integer number (3781510200).

Almost surely, 2^61685493417 is an apocalyptic number.

It is an amenable number.

61685493417 is a deficient number, since it is larger than the sum of its proper divisors (29070751383).

61685493417 is a wasteful number, since it uses less digits than its factorization.

61685493417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241133 (or 241130 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 61685493417 in words is "sixty-one billion, six hundred eighty-five million, four hundred ninety-three thousand, four hundred seventeen".