505212043603 has 4 divisors (see below), whose sum is σ = 506216441808.
Its totient is φ = 504207645400.
The previous prime is 505212043559. The next prime is 505212043663. The reversal of 505212043603 is 306340212505.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306340212505 = 5 ⋅61268042501.
It is a cyclic number.
It is not a de Polignac number, because 505212043603 - 229 = 504675172691 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (505212043663) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502198348 + ... + 502199353.
It is an arithmetic number, because the mean of its divisors is an integer number (126554110452).
Almost surely, 2505212043603 is an apocalyptic number.
505212043603 is a deficient number, since it is larger than the sum of its proper divisors (1004398205).
505212043603 is a wasteful number, since it uses less digits than its factorization.
505212043603 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1004398204.
The product of its (nonzero) digits is 21600, while the sum is 31.
The spelling of 505212043603 in words is "five hundred five billion, two hundred twelve million, forty-three thousand, six hundred three".