213885970784 has 24 divisors (see below), whose sum is σ = 421207549560. Its totient is φ = 106912624896.

The previous prime is 213885970741. The next prime is 213885970799. The reversal of 213885970784 is 487079588312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834074 + ... + 1059929.

It is an arithmetic number, because the mean of its divisors is an integer number (17550314565).

Almost surely, 2^213885970784 is an apocalyptic number.

It is an amenable number.

213885970784 is a deficient number, since it is larger than the sum of its proper divisors (207321578776).

213885970784 is a wasteful number, since it uses less digits than its factorization.

213885970784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897542 (or 1897534 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 62.

The spelling of 213885970784 in words is "two hundred thirteen billion, eight hundred eighty-five million, nine hundred seventy thousand, seven hundred eighty-four".