213920146782 has 24 divisors (see below), whose sum is σ = 490757984496. Its totient is φ = 67112202816.

The previous prime is 213920146771. The next prime is 213920146819. The reversal of 213920146782 is 287641029312.

213920146782 is a `hidden beast` number, since 21 + 3 + 92 + 0 + 1 + 467 + 82 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349542418 + ... + 349543029.

It is an arithmetic number, because the mean of its divisors is an integer number (20448249354).

Almost surely, 2^213920146782 is an apocalyptic number.

213920146782 is an abundant number, since it is smaller than the sum of its proper divisors (276837837714).

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

213920146782 is a wasteful number, since it uses less digits than its factorization.

213920146782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699085472 (or 699085469 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 213920146782 in words is "two hundred thirteen billion, nine hundred twenty million, one hundred forty-six thousand, seven hundred eighty-two".