21366703935210 has 32 divisors (see below), whose sum is σ = 51368963124672. Its totient is φ = 5687912862720.

The previous prime is 21366703935149. The next prime is 21366703935217. The reversal of 21366703935210 is 1253930766312.

It is a self number, because there is not a number n which added to its sum of digits gives 21366703935210.

It is not an unprimeable number, because it can be changed into a prime (21366703935217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 617160736 + ... + 617195355.

It is an arithmetic number, because the mean of its divisors is an integer number (1605280097646).

Almost surely, 2^{21366703935210} is an apocalyptic number.

21366703935210 is an abundant number, since it is smaller than the sum of its proper divisors (30002259189462).

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

21366703935210 is a wasteful number, since it uses less digits than its factorization.

21366703935210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234356678.

The product of its (nonzero) digits is 1224720, while the sum is 48.

The spelling of 21366703935210 in words is "twenty-one trillion, three hundred sixty-six billion, seven hundred three million, nine hundred thirty-five thousand, two hundred ten".