405456920203 has 2 divisors, whose sum is σ = 405456920204. Its totient is φ = 405456920202.

The previous prime is 405456920191. The next prime is 405456920243. The reversal of 405456920203 is 302029654504.

It is an a-pointer prime, because the next prime (405456920243) can be obtained adding 405456920203 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405456920203 - 2⁵ = 405456920171 is a prime.

It is a super-2 number, since 2×405456920203² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (405456920243) 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 as a sum of consecutive naturals, namely, 202728460101 + 202728460102.

It is an arithmetic number, because the mean of its divisors is an integer number (202728460102).

Almost surely, 2^405456920203 is an apocalyptic number.

405456920203 is a deficient number, since it is larger than the sum of its proper divisors (1).

405456920203 is an equidigital number, since it uses as much as digits as its factorization.

405456920203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 405456920203 in words is "four hundred five billion, four hundred fifty-six million, nine hundred twenty thousand, two hundred three".