220686989761 has 8 divisors (see below), whose sum is σ = 267049802880. Its totient is φ = 178033201728.

The previous prime is 220686989741. The next prime is 220686989821. The reversal of 220686989761 is 167989686022.

220686989761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220686989761 - 2¹¹ = 220686987713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220686989693 and 220686989702.

It is not an unprimeable number, because it can be changed into a prime (220686989701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927256141 + ... + 927256378.

It is an arithmetic number, because the mean of its divisors is an integer number (33381225360).

Almost surely, 2^220686989761 is an apocalyptic number.

It is an amenable number.

220686989761 is a deficient number, since it is larger than the sum of its proper divisors (46362813119).

220686989761 is a wasteful number, since it uses less digits than its factorization.

220686989761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854512543.

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 220686989761 in words is "two hundred twenty billion, six hundred eighty-six million, nine hundred eighty-nine thousand, seven hundred sixty-one".