61656116286 has 8 divisors (see below), whose sum is σ = 123312232584. Its totient is φ = 20552038760.

The previous prime is 61656116237. The next prime is 61656116293. The reversal of 61656116286 is 68261165616.

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

61656116286 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5138009685 + ... + 5138009696.

It is an arithmetic number, because the mean of its divisors is an integer number (15414029073).

Almost surely, 2^61656116286 is an apocalyptic number.

61656116286 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61656116286 is a wasteful number, since it uses less digits than its factorization.

61656116286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10276019386.

The product of its digits is 622080, while the sum is 48.

The spelling of 61656116286 in words is "sixty-one billion, six hundred fifty-six million, one hundred sixteen thousand, two hundred eighty-six".