216407262241 has 8 divisors (see below), whose sum is σ = 220086447840. Its totient is φ = 212728452288.

The previous prime is 216407262221. The next prime is 216407262259. The reversal of 216407262241 is 142262704612.

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 216407262241 - 2⁵ = 216407262209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216407262241.

It is not an unprimeable number, because it can be changed into a prime (216407262221) 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, 1223865 + ... + 1389481.

It is an arithmetic number, because the mean of its divisors is an integer number (27510805980).

Almost surely, 2^216407262241 is an apocalyptic number.

It is an amenable number.

216407262241 is a deficient number, since it is larger than the sum of its proper divisors (3679185599).

216407262241 is a wasteful number, since it uses less digits than its factorization.

216407262241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187823.

The product of its (nonzero) digits is 64512, while the sum is 37.

Adding to 216407262241 its reverse (142262704612), we get a palindrome (358669966853).

The spelling of 216407262241 in words is "two hundred sixteen billion, four hundred seven million, two hundred sixty-two thousand, two hundred forty-one".