1605336606340 has 24 divisors (see below), whose sum is σ = 3371240035800. Its totient is φ = 642128325888.

The previous prime is 1605336606283. The next prime is 1605336606361. The reversal of 1605336606340 is 436066335061.

It can be written as a sum of positive squares in 4 ways, for example, as 170166150144 + 1435170456196 = 412512^2 + 1197986^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2062114 + ... + 2731846.

It is an arithmetic number, because the mean of its divisors is an integer number (140468334825).

Almost surely, 2^{1605336606340} is an apocalyptic number.

1605336606340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1605336606340 is an abundant number, since it is smaller than the sum of its proper divisors (1765903429460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1605336606340 is a wasteful number, since it uses less digits than its factorization.

1605336606340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789591 (or 789589 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 43.

The spelling of 1605336606340 in words is "one trillion, six hundred five billion, three hundred thirty-six million, six hundred six thousand, three hundred forty".