1311562201616 has 80 divisors (see below), whose sum is σ = 2625698998080. Its totient is φ = 634340636160.

The previous prime is 1311562201589. The next prime is 1311562201619. The reversal of 1311562201616 is 6161022651131.

It is a super-2 number, since 2×1311562201616² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311562201619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59505350 + ... + 59527386.

It is an arithmetic number, because the mean of its divisors is an integer number (32821237476).

Almost surely, 2^{1311562201616} is an apocalyptic number.

1311562201616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1311562201616 is an abundant number, since it is smaller than the sum of its proper divisors (1314136796464).

1311562201616 is a wasteful number, since it uses less digits than its factorization.

1311562201616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23112 (or 23106 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

Adding to 1311562201616 its reverse (6161022651131), we get a palindrome (7472584852747).

The spelling of 1311562201616 in words is "one trillion, three hundred eleven billion, five hundred sixty-two million, two hundred one thousand, six hundred sixteen".