213537840582 has 96 divisors (see below), whose sum is σ = 497978161632. Its totient is φ = 60787584000.

The previous prime is 213537840563. The next prime is 213537840601. The reversal of 213537840582 is 285048735312.

It is an interprime number because it is at equal distance from previous prime (213537840563) and next prime (213537840601).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6661032 + ... + 6693012.

It is an arithmetic number, because the mean of its divisors is an integer number (5187272517).

Almost surely, 2^213537840582 is an apocalyptic number.

213537840582 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 213537840582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248989080816).

213537840582 is an abundant number, since it is smaller than the sum of its proper divisors (284440321050).

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

213537840582 is a wasteful number, since it uses less digits than its factorization.

213537840582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32566 (or 32555 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 213537840582 in words is "two hundred thirteen billion, five hundred thirty-seven million, eight hundred forty thousand, five hundred eighty-two".