216697201327651 has 8 divisors (see below), whose sum is σ = 236397237653808. Its totient is φ = 196997213460000.

The previous prime is 216697201327603. The next prime is 216697201327703. The reversal of 216697201327651 is 156723102796612.

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 216697201327651 - 2¹⁵ = 216697201294883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216697201327751) 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, 2427700 + ... + 20959201.

It is an arithmetic number, because the mean of its divisors is an integer number (29549654706726).

Almost surely, 2^{216697201327651} is an apocalyptic number.

216697201327651 is a deficient number, since it is larger than the sum of its proper divisors (19700036326157).

216697201327651 is a wasteful number, since it uses less digits than its factorization.

216697201327651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24229253.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 216697201327651 in words is "two hundred sixteen trillion, six hundred ninety-seven billion, two hundred one million, three hundred twenty-seven thousand, six hundred fifty-one".