216548880421 has 8 divisors (see below), whose sum is σ = 218702484000. Its totient is φ = 214395464400.

The previous prime is 216548880403. The next prime is 216548880437. The reversal of 216548880421 is 124088845612.

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 216548880421 - 2³³ = 207958945829 is a prime.

It is a super-2 number, since 2×216548880421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216548880221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3990730 + ... + 4044628.

It is an arithmetic number, because the mean of its divisors is an integer number (27337810500).

Almost surely, 2^216548880421 is an apocalyptic number.

It is an amenable number.

216548880421 is a deficient number, since it is larger than the sum of its proper divisors (2153603579).

216548880421 is a wasteful number, since it uses less digits than its factorization.

216548880421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93779.

The product of its (nonzero) digits is 983040, while the sum is 49.

The spelling of 216548880421 in words is "two hundred sixteen billion, five hundred forty-eight million, eight hundred eighty thousand, four hundred twenty-one".