216336625006401 has 6 divisors (see below), whose sum is σ = 312486236120370. Its totient is φ = 144224416670928.

The previous prime is 216336625006393. The next prime is 216336625006421. The reversal of 216336625006401 is 104600526633612.

216336625006401 is a `hidden beast` number, since 2 + 1 + 6 + 336 + 6 + 250 + 0 + 64 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 170442842501376 + 45893782505025 = 13055376^2 + 6774495^2 .

It is not a de Polignac number, because 216336625006401 - 2³ = 216336625006393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216336625006421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12018701389236 + ... + 12018701389253.

It is an arithmetic number, because the mean of its divisors is an integer number (52081039353395).

Almost surely, 2^{216336625006401} is an apocalyptic number.

It is an amenable number.

216336625006401 is a deficient number, since it is larger than the sum of its proper divisors (96149611113969).

216336625006401 is a wasteful number, since it uses less digits than its factorization.

216336625006401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24037402778495 (or 24037402778492 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 216336625006401 in words is "two hundred sixteen trillion, three hundred thirty-six billion, six hundred twenty-five million, six thousand, four hundred one".