213818877775 has 24 divisors (see below), whose sum is σ = 270892215360. Its totient is φ = 167344143360.

The previous prime is 213818877773. The next prime is 213818877791. The reversal of 213818877775 is 577778818312.

213818877775 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 213818877775 - 2¹ = 213818877773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213818877773) 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 23 ways as a sum of consecutive naturals, for example, 2802331 + ... + 2877619.

It is an arithmetic number, because the mean of its divisors is an integer number (11287175640).

Almost surely, 2^213818877775 is an apocalyptic number.

213818877775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

213818877775 is a deficient number, since it is larger than the sum of its proper divisors (57073337585).

213818877775 is a wasteful number, since it uses less digits than its factorization.

213818877775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77763 (or 77758 counting only the distinct ones).

The product of its digits is 36879360, while the sum is 64.

The spelling of 213818877775 in words is "two hundred thirteen billion, eight hundred eighteen million, eight hundred seventy-seven thousand, seven hundred seventy-five".