21680203110 has 32 divisors (see below), whose sum is σ = 53242548480. Its totient is φ = 5646936288.

The previous prime is 21680203079. The next prime is 21680203157. The reversal of 21680203110 is 1130208612.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8401890 + ... + 8404469.

It is an arithmetic number, because the mean of its divisors is an integer number (1663829640).

Almost surely, 2^21680203110 is an apocalyptic number.

21680203110 is an abundant number, since it is smaller than the sum of its proper divisors (31562345370).

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

21680203110 is a wasteful number, since it uses less digits than its factorization.

21680203110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16806412.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 21680203110 in words is "twenty-one billion, six hundred eighty million, two hundred three thousand, one hundred ten".