61366788612 has 36 divisors (see below), whose sum is σ = 161866024320. Its totient is φ = 19566222192.

The previous prime is 61366788607. The next prime is 61366788641. The reversal of 61366788612 is 21688766316.

61366788612 is a `hidden beast` number, since 6 + 13 + 6 + 6 + 7 + 8 + 8 + 612 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37056412 + ... + 37058067.

Almost surely, 2^61366788612 is an apocalyptic number.

It is an amenable number.

61366788612 is an abundant number, since it is smaller than the sum of its proper divisors (100499235708).

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

61366788612 is a wasteful number, since it uses less digits than its factorization.

61366788612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74114512 (or 74114507 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 61366788612 in words is "sixty-one billion, three hundred sixty-six million, seven hundred eighty-eight thousand, six hundred twelve".