213381340838437 has 16 divisors (see below), whose sum is σ = 215079604300800. Its totient is φ = 211689854974080.

The previous prime is 213381340838321. The next prime is 213381340838443. The reversal of 213381340838437 is 734838043183312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213381340838437 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 (213381340838447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2013605428 + ... + 2013711394.

It is an arithmetic number, because the mean of its divisors is an integer number (13442475268800).

Almost surely, 2^{213381340838437} is an apocalyptic number.

It is an amenable number.

213381340838437 is a deficient number, since it is larger than the sum of its proper divisors (1698263462363).

213381340838437 is a wasteful number, since it uses less digits than its factorization.

213381340838437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137796.

The product of its (nonzero) digits is 27869184, while the sum is 58.

The spelling of 213381340838437 in words is "two hundred thirteen trillion, three hundred eighty-one billion, three hundred forty million, eight hundred thirty-eight thousand, four hundred thirty-seven".