205120701662 has 16 divisors (see below), whose sum is σ = 311744885760. Its totient is φ = 101207149368.

The previous prime is 205120701661. The next prime is 205120701679. The reversal of 205120701662 is 266107021502.

205120701662 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205120701662² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205120701661) 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, 59618 + ... + 643269.

It is an arithmetic number, because the mean of its divisors is an integer number (19484055360).

Almost surely, 2^205120701662 is an apocalyptic number.

205120701662 is a deficient number, since it is larger than the sum of its proper divisors (106624184098).

205120701662 is a wasteful number, since it uses less digits than its factorization.

205120701662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704815.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 205120701662 in words is "two hundred five billion, one hundred twenty million, seven hundred one thousand, six hundred sixty-two".