421364650506 has 16 divisors (see below), whose sum is σ = 842745855744. Its totient is φ = 140452124384.

The previous prime is 421364650501. The next prime is 421364650529. The reversal of 421364650506 is 605056463124.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421364650501) 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, 345690 + ... + 980933.

It is an arithmetic number, because the mean of its divisors is an integer number (52671615984).

Almost surely, 2^421364650506 is an apocalyptic number.

421364650506 is an abundant number, since it is smaller than the sum of its proper divisors (421381205238).

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

421364650506 is a wasteful number, since it uses less digits than its factorization.

421364650506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379565.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 421364650506 in words is "four hundred twenty-one billion, three hundred sixty-four million, six hundred fifty thousand, five hundred six".