213380677985 has 4 divisors (see below), whose sum is σ = 256056813588. Its totient is φ = 170704542384.

The previous prime is 213380677967. The next prime is 213380677997. The reversal of 213380677985 is 589776083312.

It is a happy number.

213380677985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62158467856 + 151222210129 = 249316^2 + 388873^2 .

It is a cyclic number.

It is not a de Polignac number, because 213380677985 - 2¹⁰ = 213380676961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21338067794 + ... + 21338067803.

It is an arithmetic number, because the mean of its divisors is an integer number (64014203397).

Almost surely, 2^213380677985 is an apocalyptic number.

It is an amenable number.

213380677985 is a deficient number, since it is larger than the sum of its proper divisors (42676135603).

213380677985 is an equidigital number, since it uses as much as digits as its factorization.

213380677985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42676135602.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 213380677985 in words is "two hundred thirteen billion, three hundred eighty million, six hundred seventy-seven thousand, nine hundred eighty-five".