16204552881 has 64 divisors (see below), whose sum is σ = 25678135296. Its totient is φ = 8978457600.

The previous prime is 16204552873. The next prime is 16204552909. The reversal of 16204552881 is 18825540261.

It is not a de Polignac number, because 16204552881 - 2³ = 16204552873 is a prime.

It is a super-2 number, since 2×16204552881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16204552801) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4605735 + ... + 4609251.

It is an arithmetic number, because the mean of its divisors is an integer number (401220864).

Almost surely, 2^16204552881 is an apocalyptic number.

16204552881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16204552881 is a deficient number, since it is larger than the sum of its proper divisors (9473582415).

16204552881 is a wasteful number, since it uses less digits than its factorization.

16204552881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782.

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 16204552881 in words is "sixteen billion, two hundred four million, five hundred fifty-two thousand, eight hundred eighty-one".