213577115405 has 8 divisors (see below), whose sum is σ = 258830088984. Its totient is φ = 169169992000.

The previous prime is 213577115399. The next prime is 213577115413. The reversal of 213577115405 is 504511775312.

It can be written as a sum of positive squares in 4 ways, for example, as 124393057636 + 89184057769 = 352694^2 + 298637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213577115405 - 2⁸ = 213577115149 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 211461986 + ... + 211462995.

It is an arithmetic number, because the mean of its divisors is an integer number (32353761123).

Almost surely, 2^213577115405 is an apocalyptic number.

It is an amenable number.

213577115405 is a deficient number, since it is larger than the sum of its proper divisors (45252973579).

213577115405 is a wasteful number, since it uses less digits than its factorization.

213577115405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422925087.

The product of its (nonzero) digits is 147000, while the sum is 41.

The spelling of 213577115405 in words is "two hundred thirteen billion, five hundred seventy-seven million, one hundred fifteen thousand, four hundred five".