4212045561505 has 4 divisors (see below), whose sum is σ = 5054454673812. Its totient is φ = 3369636449200.

The previous prime is 4212045561467. The next prime is 4212045561523. The reversal of 4212045561505 is 5051655402124.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3318725697169 + 893319864336 = 1821737^2 + 945156^2 .

It is not a de Polignac number, because 4212045561505 - 2³⁹ = 3662289747617 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421204556146 + ... + 421204556155.

It is an arithmetic number, because the mean of its divisors is an integer number (1263613668453).

Almost surely, 2^{4212045561505} is an apocalyptic number.

It is an amenable number.

4212045561505 is a deficient number, since it is larger than the sum of its proper divisors (842409112307).

4212045561505 is an equidigital number, since it uses as much as digits as its factorization.

4212045561505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842409112306.

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 4212045561505 in words is "four trillion, two hundred twelve billion, forty-five million, five hundred sixty-one thousand, five hundred five".