212505465143503 has 4 divisors (see below), whose sum is σ = 242863388735440. Its totient is φ = 182147541551568.

The previous prime is 212505465143483. The next prime is 212505465143507. The reversal of 212505465143503 is 305341564505212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212505465143503 - 2⁹ = 212505465142991 is a prime.

It is a super-2 number, since 2×212505465143503² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212505465143507) 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, 15178961795958 + ... + 15178961795971.

It is an arithmetic number, because the mean of its divisors is an integer number (60715847183860).

Almost surely, 2^{212505465143503} is an apocalyptic number.

212505465143503 is a deficient number, since it is larger than the sum of its proper divisors (30357923591937).

212505465143503 is an equidigital number, since it uses as much as digits as its factorization.

212505465143503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30357923591936.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 212505465143503 in words is "two hundred twelve trillion, five hundred five billion, four hundred sixty-five million, one hundred forty-three thousand, five hundred three".