216049681593 has 16 divisors (see below), whose sum is σ = 320092676160. Its totient is φ = 144024537888.

The previous prime is 216049681579. The next prime is 216049681633. The reversal of 216049681593 is 395186940612.

216049681593 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 49 + 6 + 8 + 1 + 593 = 666.

It is not a de Polignac number, because 216049681593 - 2¹³ = 216049673401 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (216049681553) 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, 240546 + ... + 699972.

It is an arithmetic number, because the mean of its divisors is an integer number (20005792260).

Almost surely, 2^216049681593 is an apocalyptic number.

It is an amenable number.

216049681593 is a deficient number, since it is larger than the sum of its proper divisors (104042994567).

216049681593 is a wasteful number, since it uses less digits than its factorization.

216049681593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476853 (or 476847 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 216049681593 in words is "two hundred sixteen billion, forty-nine million, six hundred eighty-one thousand, five hundred ninety-three".