21496606210 has 16 divisors (see below), whose sum is σ = 39942081792. Its totient is φ = 8321266800.

The previous prime is 21496606193. The next prime is 21496606211. The reversal of 21496606210 is 1260669412.

It is a self number, because there is not a number n which added to its sum of digits gives 21496606210.

It is not an unprimeable number, because it can be changed into a prime (21496606211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34671636 + ... + 34672255.

It is an arithmetic number, because the mean of its divisors is an integer number (2496380112).

Almost surely, 2^21496606210 is an apocalyptic number.

21496606210 is a deficient number, since it is larger than the sum of its proper divisors (18445475582).

21496606210 is a wasteful number, since it uses less digits than its factorization.

21496606210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69343929.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 21496606210 in words is "twenty-one billion, four hundred ninety-six million, six hundred six thousand, two hundred ten".