1605072435340 has 24 divisors (see below), whose sum is σ = 3677075034192. Its totient is φ = 583662703680.

The previous prime is 1605072435313. The next prime is 1605072435347. The reversal of 1605072435340 is 435342705061.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1605072435293 and 1605072435302.

It is not an unprimeable number, because it can be changed into a prime (1605072435347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3647891679 + ... + 3647892118.

It is an arithmetic number, because the mean of its divisors is an integer number (153211459758).

Almost surely, 2^{1605072435340} is an apocalyptic number.

1605072435340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1605072435340 is an abundant number, since it is smaller than the sum of its proper divisors (2072002598852).

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

1605072435340 is a wasteful number, since it uses less digits than its factorization.

1605072435340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7295783817 (or 7295783815 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 1605072435340 in words is "one trillion, six hundred five billion, seventy-two million, four hundred thirty-five thousand, three hundred forty".