1311422550616 has 8 divisors (see below), whose sum is σ = 2458917282420. Its totient is φ = 655711275304.

The previous prime is 1311422550611. The next prime is 1311422550661. The reversal of 1311422550616 is 6160552241131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311422550611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81963909406 + ... + 81963909421.

Almost surely, 2^{1311422550616} is an apocalyptic number.

It is an amenable number.

1311422550616 is a deficient number, since it is larger than the sum of its proper divisors (1147494731804).

1311422550616 is a wasteful number, since it uses less digits than its factorization.

1311422550616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163927818833 (or 163927818829 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

Adding to 1311422550616 its reverse (6160552241131), we get a palindrome (7471974791747).

The spelling of 1311422550616 in words is "one trillion, three hundred eleven billion, four hundred twenty-two million, five hundred fifty thousand, six hundred sixteen".