421645005263 has 8 divisors (see below), whose sum is σ = 422101570800. Its totient is φ = 421188643008.

The previous prime is 421645005253. The next prime is 421645005319. The reversal of 421645005263 is 362500546124.

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

It is a cyclic number.

It is not a de Polignac number, because 421645005263 - 2⁸ = 421645005007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421645005233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4299308 + ... + 4396286.

It is an arithmetic number, because the mean of its divisors is an integer number (52762696350).

Almost surely, 2^421645005263 is an apocalyptic number.

421645005263 is a deficient number, since it is larger than the sum of its proper divisors (456565537).

421645005263 is a wasteful number, since it uses less digits than its factorization.

421645005263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101641.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 421645005263 in words is "four hundred twenty-one billion, six hundred forty-five million, five thousand, two hundred sixty-three".