411691721785345 has 8 divisors (see below), whose sum is σ = 494160176796264. Its totient is φ = 329266636992384.

The previous prime is 411691721785327. The next prime is 411691721785349. The reversal of 411691721785345 is 543587127196114.

It can be written as a sum of positive squares in 4 ways, for example, as 56313272783089 + 355378449002256 = 7504217^2 + 18851484^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-411691721785345 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (411691721785349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10842533604 + ... + 10842571573.

It is an arithmetic number, because the mean of its divisors is an integer number (61770022099533).

Almost surely, 2^{411691721785345} is an apocalyptic number.

It is an amenable number.

411691721785345 is a deficient number, since it is larger than the sum of its proper divisors (82468455010919).

411691721785345 is a wasteful number, since it uses less digits than its factorization.

411691721785345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21685108979.

The product of its digits is 50803200, while the sum is 64.

The spelling of 411691721785345 in words is "four hundred eleven trillion, six hundred ninety-one billion, seven hundred twenty-one million, seven hundred eighty-five thousand, three hundred forty-five".