821432285419 has 2 divisors, whose sum is σ = 821432285420. Its totient is φ = 821432285418.

The previous prime is 821432285413. The next prime is 821432285441. The reversal of 821432285419 is 914582234128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 821432285419 - 2³ = 821432285411 is a prime.

It is a super-2 number, since 2×821432285419² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (821432285411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410716142709 + 410716142710.

It is an arithmetic number, because the mean of its divisors is an integer number (410716142710).

Almost surely, 2^821432285419 is an apocalyptic number.

821432285419 is a deficient number, since it is larger than the sum of its proper divisors (1).

821432285419 is an equidigital number, since it uses as much as digits as its factorization.

821432285419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 49.

The spelling of 821432285419 in words is "eight hundred twenty-one billion, four hundred thirty-two million, two hundred eighty-five thousand, four hundred nineteen".