1311620645116 has 12 divisors (see below), whose sum is σ = 2295347705280. Its totient is φ = 655807015040.

The previous prime is 1311620645099. The next prime is 1311620645117. The reversal of 1311620645116 is 6115460261131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311620645117) 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, 209781 + ... + 1633171.

It is an arithmetic number, because the mean of its divisors is an integer number (191278975440).

Almost surely, 2^{1311620645116} is an apocalyptic number.

It is an amenable number.

1311620645116 is a deficient number, since it is larger than the sum of its proper divisors (983727060164).

1311620645116 is a wasteful number, since it uses less digits than its factorization.

1311620645116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653764 (or 1653762 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 1311620645116 in words is "one trillion, three hundred eleven billion, six hundred twenty million, six hundred forty-five thousand, one hundred sixteen".