5641718171465 has 16 divisors (see below), whose sum is σ = 6774897349200. Its totient is φ = 4510151476992.

The previous prime is 5641718171431. The next prime is 5641718171483.

It is a happy number.

5641718171465 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 694164409 + 5641024007056 = 26347^2 + 2375084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5641718171465 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5641718171465.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83190791 + ... + 83258579.

It is an arithmetic number, because the mean of its divisors is an integer number (423431084325).

Almost surely, 2^{5641718171465} is an apocalyptic number.

It is an amenable number.

5641718171465 is a deficient number, since it is larger than the sum of its proper divisors (1133179177735).

5641718171465 is a wasteful number, since it uses less digits than its factorization.

5641718171465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79436.

The product of its digits is 5644800, while the sum is 56.

The spelling of 5641718171465 in words is "five trillion, six hundred forty-one billion, seven hundred eighteen million, one hundred seventy-one thousand, four hundred sixty-five".