416216661485 has 4 divisors (see below), whose sum is σ = 499459993788. Its totient is φ = 332973329184.

The previous prime is 416216661481. The next prime is 416216661569. The reversal of 416216661485 is 584166612614.

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 83311895044 + 332904766441 = 288638^2 + 576979^2 .

It is a cyclic number.

It is not a de Polignac number, because 416216661485 - 2² = 416216661481 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 (416216661481) 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, 41621666144 + ... + 41621666153.

It is an arithmetic number, because the mean of its divisors is an integer number (124864998447).

Almost surely, 2^416216661485 is an apocalyptic number.

It is an amenable number.

416216661485 is a deficient number, since it is larger than the sum of its proper divisors (83243332303).

416216661485 is an equidigital number, since it uses as much as digits as its factorization.

416216661485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83243332302.

The product of its digits is 1658880, while the sum is 50.

It can be divided in two parts, 416216 and 661485, that added together give a palindrome (1077701).

The spelling of 416216661485 in words is "four hundred sixteen billion, two hundred sixteen million, six hundred sixty-one thousand, four hundred eighty-five".