1316233660541 has 4 divisors (see below), whose sum is σ = 1329265677084. Its totient is φ = 1303201644000.

The previous prime is 1316233660519. The next prime is 1316233660543. The reversal of 1316233660541 is 1450663326131.

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 1199528752900 + 116704907641 = 1095230^2 + 341621^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316233660541 - 2⁶ = 1316233660477 is a prime.

It is a super-4 number, since 4×1316233660541⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316233660543) 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, 6516008120 + ... + 6516008321.

It is an arithmetic number, because the mean of its divisors is an integer number (332316419271).

Almost surely, 2^{1316233660541} is an apocalyptic number.

It is an amenable number.

1316233660541 is a deficient number, since it is larger than the sum of its proper divisors (13032016543).

1316233660541 is a wasteful number, since it uses less digits than its factorization.

1316233660541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032016542.

The product of its (nonzero) digits is 233280, while the sum is 41.

Adding to 1316233660541 its reverse (1450663326131), we get a palindrome (2766896986672).

The spelling of 1316233660541 in words is "one trillion, three hundred sixteen billion, two hundred thirty-three million, six hundred sixty thousand, five hundred forty-one".