216453251601 has 24 divisors (see below), whose sum is σ = 315804827520. Its totient is φ = 142848756000.

The previous prime is 216453251593. The next prime is 216453251611. The reversal of 216453251601 is 106152354612.

216453251601 is a `hidden beast` number, since 2 + 1 + 6 + 45 + 3 + 2 + 5 + 1 + 601 = 666.

It is not a de Polignac number, because 216453251601 - 2³ = 216453251593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216453251611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6319560 + ... + 6353718.

It is an arithmetic number, because the mean of its divisors is an integer number (13158534480).

Almost surely, 2^216453251601 is an apocalyptic number.

It is an amenable number.

216453251601 is a deficient number, since it is larger than the sum of its proper divisors (99351575919).

216453251601 is a wasteful number, since it uses less digits than its factorization.

216453251601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41237 (or 41234 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 216453251601 in words is "two hundred sixteen billion, four hundred fifty-three million, two hundred fifty-one thousand, six hundred one".