1605605153755 has 4 divisors (see below), whose sum is σ = 1926726184512. Its totient is φ = 1284484123000.

The previous prime is 1605605153729. The next prime is 1605605153759. The reversal of 1605605153755 is 5573515065061.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1605605153755 - 2¹⁷ = 1605605022683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1605605153699 and 1605605153708.

It is not an unprimeable number, because it can be changed into a prime (1605605153759) 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, 160560515371 + ... + 160560515380.

It is an arithmetic number, because the mean of its divisors is an integer number (481681546128).

Almost surely, 2^{1605605153755} is an apocalyptic number.

1605605153755 is a deficient number, since it is larger than the sum of its proper divisors (321121030757).

1605605153755 is an equidigital number, since it uses as much as digits as its factorization.

1605605153755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321121030756.

The product of its (nonzero) digits is 2362500, while the sum is 49.

The spelling of 1605605153755 in words is "one trillion, six hundred five billion, six hundred five million, one hundred fifty-three thousand, seven hundred fifty-five".