1331450455865 has 32 divisors (see below), whose sum is σ = 1741442526720. Its totient is φ = 974165423616.

The previous prime is 1331450455849. The next prime is 1331450455871. The reversal of 1331450455865 is 5685540541331.

It is a cyclic number.

It is not a de Polignac number, because 1331450455865 - 2⁴ = 1331450455849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1594532 + ... + 2281541.

It is an arithmetic number, because the mean of its divisors is an integer number (54420078960).

Almost surely, 2^{1331450455865} is an apocalyptic number.

It is an amenable number.

1331450455865 is a deficient number, since it is larger than the sum of its proper divisors (409992070855).

1331450455865 is a wasteful number, since it uses less digits than its factorization.

1331450455865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876233.

The product of its (nonzero) digits is 4320000, while the sum is 50.

The spelling of 1331450455865 in words is "one trillion, three hundred thirty-one billion, four hundred fifty million, four hundred fifty-five thousand, eight hundred sixty-five".