216101151165561 has 8 divisors (see below), whose sum is σ = 288228145950240. Its totient is φ = 144020795245632.

The previous prime is 216101151165541. The next prime is 216101151165583. The reversal of 216101151165561 is 165561151101612.

216101151165561 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 216101151165561 - 2⁷ = 216101151165433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216101151165541) 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, 11659705375 + ... + 11659723908.

It is an arithmetic number, because the mean of its divisors is an integer number (36028518243780).

Almost surely, 2^{216101151165561} is an apocalyptic number.

It is an amenable number.

216101151165561 is a deficient number, since it is larger than the sum of its proper divisors (72126994784679).

216101151165561 is a wasteful number, since it uses less digits than its factorization.

216101151165561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23319432375.

The product of its (nonzero) digits is 54000, while the sum is 42.

The spelling of 216101151165561 in words is "two hundred sixteen trillion, one hundred one billion, one hundred fifty-one million, one hundred sixty-five thousand, five hundred sixty-one".