213065914986 has 12 divisors (see below), whose sum is σ = 461642815842. Its totient is φ = 71021971656.

The previous prime is 213065914981. The next prime is 213065914987. The reversal of 213065914986 is 689419560312.

213065914986 is a `hidden beast` number, since 2 + 1 + 3 + 0 + 6 + 591 + 49 + 8 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 172199270961 + 40866644025 = 414969^2 + 202155^2 .

It is not an unprimeable number, because it can be changed into a prime (213065914981) 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 5 ways as a sum of consecutive naturals, for example, 5918497621 + ... + 5918497656.

Almost surely, 2^213065914986 is an apocalyptic number.

213065914986 is an abundant number, since it is smaller than the sum of its proper divisors (248576900856).

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

213065914986 is a wasteful number, since it uses less digits than its factorization.

213065914986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11836995285 (or 11836995282 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 213065914986 in words is "two hundred thirteen billion, sixty-five million, nine hundred fourteen thousand, nine hundred eighty-six".