402553502505 has 192 divisors, whose sum is σ = 903413661696. Its totient is φ = 160921728000.

The previous prime is 402553502489. The next prime is 402553502557. The reversal of 402553502505 is 505205355204.

402553502505 is a `hidden beast` number, since 4 + 0 + 2 + 55 + 350 + 250 + 5 = 666.

It is not a de Polignac number, because 402553502505 - 2⁴ = 402553502489 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 402553502505.

It is an unprimeable number.

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 in 191 ways as a sum of consecutive naturals, for example, 17927085 + ... + 17949525.

It is an arithmetic number, because the mean of its divisors is an integer number (4705279488).

Almost surely, 2^402553502505 is an apocalyptic number.

402553502505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

402553502505 is an abundant number, since it is smaller than the sum of its proper divisors (500860159191).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402553502505 is a wasteful number, since it uses less digits than its factorization.

402553502505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22668 (or 22665 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 36.

Adding to 402553502505 its reverse (505205355204), we get a palindrome (907758857709).

The spelling of 402553502505 in words is "four hundred two billion, five hundred fifty-three million, five hundred two thousand, five hundred five".