21466680202 has 16 divisors (see below), whose sum is σ = 36076682592. Its totient is φ = 9493863120.

The previous prime is 21466680199. The next prime is 21466680223. The reversal of 21466680202 is 20208666412.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13185108 + ... + 13186735.

It is an arithmetic number, because the mean of its divisors is an integer number (2254792662).

Almost surely, 2^21466680202 is an apocalyptic number.

21466680202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21466680202 is a deficient number, since it is larger than the sum of its proper divisors (14610002390).

21466680202 is a wasteful number, since it uses less digits than its factorization.

21466680202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26371893.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 21466680202 in words is "twenty-one billion, four hundred sixty-six million, six hundred eighty thousand, two hundred two".