10421004665 has 8 divisors (see below), whose sum is σ = 12513658248. Its totient is φ = 8331168640.

The previous prime is 10421004647. The next prime is 10421004667. The reversal of 10421004665 is 56640012401.

It can be written as a sum of positive squares in 4 ways, for example, as 2018165776 + 8402838889 = 44924^2 + 91667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10421004665 - 2⁸ = 10421004409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10421004667) by changing a digit.

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, 696242 + ... + 711051.

It is an arithmetic number, because the mean of its divisors is an integer number (1564207281).

Almost surely, 2^10421004665 is an apocalyptic number.

It is an amenable number.

10421004665 is a deficient number, since it is larger than the sum of its proper divisors (2092653583).

10421004665 is a wasteful number, since it uses less digits than its factorization.

10421004665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408779.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 10421004665 in words is "ten billion, four hundred twenty-one million, four thousand, six hundred sixty-five".