216267414721 has 8 divisors (see below), whose sum is σ = 216490104000. Its totient is φ = 216044822448.

The previous prime is 216267414719. The next prime is 216267414733. The reversal of 216267414721 is 127414762612.

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

It is a cyclic number.

It is not a de Polignac number, because 216267414721 - 2¹ = 216267414719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216267414521) 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, 4950030 + ... + 4993528.

It is an arithmetic number, because the mean of its divisors is an integer number (27061263000).

Almost surely, 2^216267414721 is an apocalyptic number.

It is an amenable number.

216267414721 is a deficient number, since it is larger than the sum of its proper divisors (222689279).

216267414721 is a wasteful number, since it uses less digits than its factorization.

216267414721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48503.

The product of its digits is 225792, while the sum is 43.

It can be divided in two parts, 21626 and 7414721, that added together give a palindrome (7436347).

The spelling of 216267414721 in words is "two hundred sixteen billion, two hundred sixty-seven million, four hundred fourteen thousand, seven hundred twenty-one".