421564848507613 has 4 divisors (see below), whose sum is σ = 421594622153280. Its totient is φ = 421535074861948.

The previous prime is 421564848507577. The next prime is 421564848507617. The reversal of 421564848507613 is 316705848465124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421564848507613 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 (421564848507617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14886801595 + ... + 14886829912.

It is an arithmetic number, because the mean of its divisors is an integer number (105398655538320).

Almost surely, 2^{421564848507613} is an apocalyptic number.

It is an amenable number.

421564848507613 is a deficient number, since it is larger than the sum of its proper divisors (29773645667).

421564848507613 is a wasteful number, since it uses less digits than its factorization.

421564848507613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29773645666.

The product of its (nonzero) digits is 154828800, while the sum is 64.

The spelling of 421564848507613 in words is "four hundred twenty-one trillion, five hundred sixty-four billion, eight hundred forty-eight million, five hundred seven thousand, six hundred thirteen".