1605065650995 has 16 divisors (see below), whose sum is σ = 2568722919840. Its totient is φ = 855829054464.

The previous prime is 1605065650957. The next prime is 1605065651017. The reversal of 1605065650995 is 5990565605061.

It is a de Polignac number, because none of the positive numbers 2^k-1605065650995 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12808030 + ... + 12932739.

It is an arithmetic number, because the mean of its divisors is an integer number (160545182490).

Almost surely, 2^{1605065650995} is an apocalyptic number.

1605065650995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1605065650995 is a deficient number, since it is larger than the sum of its proper divisors (963657268845).

1605065650995 is a wasteful number, since it uses less digits than its factorization.

1605065650995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25744934.

The product of its (nonzero) digits is 10935000, while the sum is 57.

The spelling of 1605065650995 in words is "one trillion, six hundred five billion, sixty-five million, six hundred fifty thousand, nine hundred ninety-five".