213155042533 has 4 divisors (see below), whose sum is σ = 214226173600. Its totient is φ = 212083911468.

The previous prime is 213155042479. The next prime is 213155042587. The reversal of 213155042533 is 335240551312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (213155042479) and next prime (213155042587).

It is a cyclic number.

It is not a de Polignac number, because 213155042533 - 2²⁵ = 213121488101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213155043533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535565235 + ... + 535565632.

It is an arithmetic number, because the mean of its divisors is an integer number (53556543400).

Almost surely, 2^213155042533 is an apocalyptic number.

It is an amenable number.

213155042533 is a deficient number, since it is larger than the sum of its proper divisors (1071131067).

213155042533 is a wasteful number, since it uses less digits than its factorization.

213155042533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071131066.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 213155042533 its reverse (335240551312), we get a palindrome (548395593845).

The spelling of 213155042533 in words is "two hundred thirteen billion, one hundred fifty-five million, forty-two thousand, five hundred thirty-three".