216201771825088 has 28 divisors (see below), whose sum is σ = 490314732532912. Its totient is φ = 92657902210560.

The previous prime is 216201771825029. The next prime is 216201771825103. The reversal of 216201771825088 is 880528177102612.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×216201771825088² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241296619893 + ... + 241296620788.

It is an arithmetic number, because the mean of its divisors is an integer number (17511240447604).

Almost surely, 2^{216201771825088} is an apocalyptic number.

216201771825088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

216201771825088 is an abundant number, since it is smaller than the sum of its proper divisors (274112960707824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216201771825088 is an equidigital number, since it uses as much as digits as its factorization.

216201771825088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482593240700 (or 482593240690 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 58.

The spelling of 216201771825088 in words is "two hundred sixteen trillion, two hundred one billion, seven hundred seventy-one million, eight hundred twenty-five thousand, eighty-eight".