1311632266465 has 8 divisors (see below), whose sum is σ = 1574277558120. Its totient is φ = 1049093254272.

The previous prime is 1311632266429. The next prime is 1311632266487. The reversal of 1311632266465 is 5646622361131.

It can be written as a sum of positive squares in 4 ways, for example, as 299507736529 + 1012124529936 = 547273^2 + 1006044^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311632266465 - 2¹³ = 1311632258273 is a prime.

It is a super-2 number, since 2×1311632266465² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26542710 + ... + 26592079.

It is an arithmetic number, because the mean of its divisors is an integer number (196784694765).

Almost surely, 2^{1311632266465} is an apocalyptic number.

It is an amenable number.

1311632266465 is a deficient number, since it is larger than the sum of its proper divisors (262645291655).

1311632266465 is an equidigital number, since it uses as much as digits as its factorization.

1311632266465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53139731.

The product of its digits is 933120, while the sum is 46.

The spelling of 1311632266465 in words is "one trillion, three hundred eleven billion, six hundred thirty-two million, two hundred sixty-six thousand, four hundred sixty-five".