1311241954645 has 64 divisors (see below), whose sum is σ = 2014657159680. Its totient is φ = 797552345088.

The previous prime is 1311241954643. The next prime is 1311241954657. The reversal of 1311241954645 is 5464591421131.

It is a cyclic number.

It is not a de Polignac number, because 1311241954645 - 2¹ = 1311241954643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311241954595 and 1311241954604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311241954643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1881379 + ... + 2482351.

It is an arithmetic number, because the mean of its divisors is an integer number (31479018120).

Almost surely, 2^{1311241954645} is an apocalyptic number.

It is an amenable number.

1311241954645 is a deficient number, since it is larger than the sum of its proper divisors (703415205035).

1311241954645 is a wasteful number, since it uses less digits than its factorization.

1311241954645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601214.

The product of its digits is 518400, while the sum is 46.

The spelling of 1311241954645 in words is "one trillion, three hundred eleven billion, two hundred forty-one million, nine hundred fifty-four thousand, six hundred forty-five".