1326285616905 has 40 divisors (see below), whose sum is σ = 2412974743872. Its totient is φ = 696794817312.

The previous prime is 1326285616853. The next prime is 1326285616967. The reversal of 1326285616905 is 5096165826231.

1326285616905 is a `hidden beast` number, since 1 + 3 + 2 + 628 + 5 + 6 + 1 + 6 + 9 + 0 + 5 = 666.

It is not a de Polignac number, because 1326285616905 - 2¹² = 1326285612809 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24411517 + ... + 24465786.

Almost surely, 2^{1326285616905} is an apocalyptic number.

1326285616905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1326285616905 is a deficient number, since it is larger than the sum of its proper divisors (1086689126967).

1326285616905 is an equidigital number, since it uses as much as digits as its factorization.

1326285616905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48877387 (or 48877378 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 1326285616905 in words is "one trillion, three hundred twenty-six billion, two hundred eighty-five million, six hundred sixteen thousand, nine hundred five".