1605500244045 has 24 divisors (see below), whose sum is σ = 2786543327256. Its totient is φ = 855135646848.

The previous prime is 1605500244013. The next prime is 1605500244157. The reversal of 1605500244045 is 5404420055061.

1605500244045 is a `hidden beast` number, since 1 + 6 + 0 + 550 + 0 + 24 + 40 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 268098199524 + 1337402044521 = 517782^2 + 1156461^2 .

It is not a de Polignac number, because 1605500244045 - 2⁵ = 1605500244013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23531182 + ... + 23599311.

It is an arithmetic number, because the mean of its divisors is an integer number (116105971969).

Almost surely, 2^{1605500244045} is an apocalyptic number.

1605500244045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1605500244045 is a deficient number, since it is larger than the sum of its proper divisors (1181043083211).

1605500244045 is a wasteful number, since it uses less digits than its factorization.

1605500244045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47131261 (or 47131258 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 1605500244045 in words is "one trillion, six hundred five billion, five hundred million, two hundred forty-four thousand, forty-five".