1233453420405 has 20 divisors (see below), whose sum is σ = 2211079465452. Its totient is φ = 657841824000.

The previous prime is 1233453420359. The next prime is 1233453420421. The reversal of 1233453420405 is 5040243543321.

1233453420405 is a `hidden beast` number, since 1 + 233 + 45 + 342 + 0 + 40 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 979137956196 + 254315464209 = 989514^2 + 504297^2 .

It is not a de Polignac number, because 1233453420405 - 2¹² = 1233453416309 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1233453420405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1522781596 + ... + 1522782405.

Almost surely, 2^{1233453420405} is an apocalyptic number.

1233453420405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1233453420405 is a deficient number, since it is larger than the sum of its proper divisors (977626045047).

1233453420405 is an equidigital number, since it uses as much as digits as its factorization.

1233453420405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045564018 (or 3045564009 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 1233453420405 its reverse (5040243543321), we get a palindrome (6273696963726).

The spelling of 1233453420405 in words is "one trillion, two hundred thirty-three billion, four hundred fifty-three million, four hundred twenty thousand, four hundred five".