213655543383 has 4 divisors (see below), whose sum is σ = 284874057848. Its totient is φ = 142437028920.

The previous prime is 213655543379. The next prime is 213655543403. The reversal of 213655543383 is 383345556312.

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

It is not a de Polignac number, because 213655543383 - 2² = 213655543379 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 (213655543313) 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, 35609257228 + ... + 35609257233.

It is an arithmetic number, because the mean of its divisors is an integer number (71218514462).

Almost surely, 2^213655543383 is an apocalyptic number.

213655543383 is a deficient number, since it is larger than the sum of its proper divisors (71218514465).

213655543383 is an equidigital number, since it uses as much as digits as its factorization.

213655543383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71218514464.

The product of its digits is 3888000, while the sum is 48.

The spelling of 213655543383 in words is "two hundred thirteen billion, six hundred fifty-five million, five hundred forty-three thousand, three hundred eighty-three".