416221665380 has 96 divisors (see below), whose sum is σ = 916972358400. Its totient is φ = 158486010368.

The previous prime is 416221665373. The next prime is 416221665403. The reversal of 416221665380 is 83566122614.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24205826 + ... + 24223014.

It is an arithmetic number, because the mean of its divisors is an integer number (9551795400).

Almost surely, 2^416221665380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 416221665380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458486179200).

416221665380 is an abundant number, since it is smaller than the sum of its proper divisors (500750693020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

416221665380 is a wasteful number, since it uses less digits than its factorization.

416221665380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17813 (or 17811 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

Adding to 416221665380 its reverse (83566122614), we get a palindrome (499787787994).

The spelling of 416221665380 in words is "four hundred sixteen billion, two hundred twenty-one million, six hundred sixty-five thousand, three hundred eighty".