421365450644163 has 6 divisors (see below), whose sum is σ = 608638984263804. Its totient is φ = 280910300429436.

The previous prime is 421365450644119. The next prime is 421365450644197. The reversal of 421365450644163 is 361446054563124.

421365450644163 is a `hidden beast` number, since 4 + 2 + 1 + 36 + 5 + 4 + 506 + 4 + 41 + 63 = 666.

It is not a de Polignac number, because 421365450644163 - 2²¹ = 421365448547011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421365452644163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23409191702445 + ... + 23409191702462.

It is an arithmetic number, because the mean of its divisors is an integer number (101439830710634).

Almost surely, 2^{421365450644163} is an apocalyptic number.

421365450644163 is a deficient number, since it is larger than the sum of its proper divisors (187273533619641).

421365450644163 is a wasteful number, since it uses less digits than its factorization.

421365450644163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46818383404913 (or 46818383404910 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 54.

The spelling of 421365450644163 in words is "four hundred twenty-one trillion, three hundred sixty-five billion, four hundred fifty million, six hundred forty-four thousand, one hundred sixty-three".