421625556343 has 4 divisors (see below), whose sum is σ = 423305339688. Its totient is φ = 419945773000.

The previous prime is 421625556337. The next prime is 421625556347. The reversal of 421625556343 is 343655526124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421625556343 - 2⁹ = 421625555831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421625556293 and 421625556302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421625556347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839891296 + ... + 839891797.

It is an arithmetic number, because the mean of its divisors is an integer number (105826334922).

Almost surely, 2^421625556343 is an apocalyptic number.

421625556343 is a deficient number, since it is larger than the sum of its proper divisors (1679783345).

421625556343 is a wasteful number, since it uses less digits than its factorization.

421625556343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679783344.

The product of its digits is 2592000, while the sum is 46.

The spelling of 421625556343 in words is "four hundred twenty-one billion, six hundred twenty-five million, five hundred fifty-six thousand, three hundred forty-three".