421854146983 has 2 divisors, whose sum is σ = 421854146984. Its totient is φ = 421854146982.

The previous prime is 421854146981. The next prime is 421854147049. The reversal of 421854146983 is 389641458124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421854146983 - 2¹ = 421854146981 is a prime.

Together with 421854146981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421854146981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210927073491 + 210927073492.

It is an arithmetic number, because the mean of its divisors is an integer number (210927073492).

Almost surely, 2^421854146983 is an apocalyptic number.

421854146983 is a deficient number, since it is larger than the sum of its proper divisors (1).

421854146983 is an equidigital number, since it uses as much as digits as its factorization.

421854146983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 55.

The spelling of 421854146983 in words is "four hundred twenty-one billion, eight hundred fifty-four million, one hundred forty-six thousand, nine hundred eighty-three".