213578834535 has 288 divisors, whose sum is σ = 451930280256. Its totient is φ = 96347750400.

The previous prime is 213578834471. The next prime is 213578834537. The reversal of 213578834535 is 535438875312.

213578834535 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 78 + 8 + 34 + 535 = 666.

213578834535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213578834535 - 2⁶ = 213578834471 is a prime.

It is a super-2 number, since 2×213578834535² (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 (213578834537) 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 287 ways as a sum of consecutive naturals, for example, 242427295 + ... + 242428175.

It is an arithmetic number, because the mean of its divisors is an integer number (1569202362).

Almost surely, 2^213578834535 is an apocalyptic number.

213578834535 is an abundant number, since it is smaller than the sum of its proper divisors (238351445721).

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

213578834535 is a wasteful number, since it uses less digits than its factorization.

213578834535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1014 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 213578834535 in words is "two hundred thirteen billion, five hundred seventy-eight million, eight hundred thirty-four thousand, five hundred thirty-five".