10212440645665 has 32 divisors (see below), whose sum is σ = 12873300913152. Its totient is φ = 7767314208000.

The previous prime is 10212440645663. The next prime is 10212440645699. The reversal of 10212440645665 is 56654604421201.

It is not a de Polignac number, because 10212440645665 - 2¹ = 10212440645663 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (10212440645663) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7104754 + ... + 8420356.

It is an arithmetic number, because the mean of its divisors is an integer number (402290653536).

Almost surely, 2^{10212440645665} is an apocalyptic number.

It is an amenable number.

10212440645665 is a deficient number, since it is larger than the sum of its proper divisors (2660860267487).

10212440645665 is a wasteful number, since it uses less digits than its factorization.

10212440645665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316521.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 10212440645665 in words is "ten trillion, two hundred twelve billion, four hundred forty million, six hundred forty-five thousand, six hundred sixty-five".