405352121253503 has 16 divisors (see below), whose sum is σ = 428798701094400. Its totient is φ = 382119712272000.

The previous prime is 405352121253491. The next prime is 405352121253587. The reversal of 405352121253503 is 305352121253504.

It is a cyclic number.

It is not a de Polignac number, because 405352121253503 - 2⁶ = 405352121253439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405352121253593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35948426 + ... + 45858407.

It is an arithmetic number, because the mean of its divisors is an integer number (26799918818400).

Almost surely, 2^{405352121253503} is an apocalyptic number.

405352121253503 is a deficient number, since it is larger than the sum of its proper divisors (23446579840897).

405352121253503 is a wasteful number, since it uses less digits than its factorization.

405352121253503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81808142.

The product of its (nonzero) digits is 540000, while the sum is 41.

Subtracting from 405352121253503 its reverse (305352121253504), we obtain a palindrome (99999999999999).

The spelling of 405352121253503 in words is "four hundred five trillion, three hundred fifty-two billion, one hundred twenty-one million, two hundred fifty-three thousand, five hundred three".