213500263526421 has 8 divisors (see below), whose sum is σ = 285717449837184. Its totient is φ = 141808293116640.

The previous prime is 213500263526419. The next prime is 213500263526443. The reversal of 213500263526421 is 124625362005312.

213500263526421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213500263526421 - 2¹ = 213500263526419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213500263526471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131303974296 + ... + 131303975921.

It is an arithmetic number, because the mean of its divisors is an integer number (35714681229648).

Almost surely, 2^{213500263526421} is an apocalyptic number.

It is an amenable number.

213500263526421 is a deficient number, since it is larger than the sum of its proper divisors (72217186310763).

213500263526421 is a wasteful number, since it uses less digits than its factorization.

213500263526421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262607950491.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 213500263526421 in words is "two hundred thirteen trillion, five hundred billion, two hundred sixty-three million, five hundred twenty-six thousand, four hundred twenty-one".