1605536531216 has 80 divisors (see below), whose sum is σ = 3198732768000. Its totient is φ = 780310379520.

The previous prime is 1605536531143. The next prime is 1605536531257. The reversal of 1605536531216 is 6121356355061.

It is a happy number.

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, 64860410 + ... + 64885158.

It is an arithmetic number, because the mean of its divisors is an integer number (39984159600).

Almost surely, 2^{1605536531216} is an apocalyptic number.

1605536531216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1605536531216 is a deficient number, since it is larger than the sum of its proper divisors (1593196236784).

1605536531216 is a wasteful number, since it uses less digits than its factorization.

1605536531216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25392 (or 25386 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 1605536531216 in words is "one trillion, six hundred five billion, five hundred thirty-six million, five hundred thirty-one thousand, two hundred sixteen".