421643556234345 has 8 divisors (see below), whose sum is σ = 674629689974976. Its totient is φ = 224876563324976.

The previous prime is 421643556234323. The next prime is 421643556234391. The reversal of 421643556234345 is 543432655346124.

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 421643556234345 - 2¹⁰ = 421643556233321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14054785207797 + ... + 14054785207826.

It is an arithmetic number, because the mean of its divisors is an integer number (84328711246872).

Almost surely, 2^{421643556234345} is an apocalyptic number.

It is an amenable number.

421643556234345 is a deficient number, since it is larger than the sum of its proper divisors (252986133740631).

421643556234345 is a wasteful number, since it uses less digits than its factorization.

421643556234345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28109570415631.

The product of its digits is 124416000, while the sum is 57.

The spelling of 421643556234345 in words is "four hundred twenty-one trillion, six hundred forty-three billion, five hundred fifty-six million, two hundred thirty-four thousand, three hundred forty-five".