216156727693 has 16 divisors (see below), whose sum is σ = 232754299200. Its totient is φ = 199994284800.

The previous prime is 216156727679. The next prime is 216156727733. The reversal of 216156727693 is 396727651612.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 216156727693 - 2¹³ = 216156719501 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 (216156727613) 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, 1820458 + ... + 1935556.

It is an arithmetic number, because the mean of its divisors is an integer number (14547143700).

Almost surely, 2^216156727693 is an apocalyptic number.

It is an amenable number.

216156727693 is a deficient number, since it is larger than the sum of its proper divisors (16597571507).

216156727693 is a wasteful number, since it uses less digits than its factorization.

216156727693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116988.

The product of its digits is 5715360, while the sum is 55.

The spelling of 216156727693 in words is "two hundred sixteen billion, one hundred fifty-six million, seven hundred twenty-seven thousand, six hundred ninety-three".