284021421823 has 2 divisors, whose sum is σ = 284021421824. Its totient is φ = 284021421822.

The previous prime is 284021421793. The next prime is 284021421877. The reversal of 284021421823 is 328124120482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 284021421823 - 2⁹ = 284021421311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284021421023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142010710911 + 142010710912.

It is an arithmetic number, because the mean of its divisors is an integer number (142010710912).

Almost surely, 2^284021421823 is an apocalyptic number.

284021421823 is a deficient number, since it is larger than the sum of its proper divisors (1).

284021421823 is an equidigital number, since it uses as much as digits as its factorization.

284021421823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 37.

The spelling of 284021421823 in words is "two hundred eighty-four billion, twenty-one million, four hundred twenty-one thousand, eight hundred twenty-three".