1605416774320 has 40 divisors (see below), whose sum is σ = 3732705555840. Its totient is φ = 642147517440.

The previous prime is 1605416774293. The next prime is 1605416774327. The reversal of 1605416774320 is 234776145061.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1605416774320² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1605416774327) 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, 2563425 + ... + 3127615.

It is an arithmetic number, because the mean of its divisors is an integer number (93317638896).

Almost surely, 2^{1605416774320} is an apocalyptic number.

1605416774320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1605416774320 is an abundant number, since it is smaller than the sum of its proper divisors (2127288781520).

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

1605416774320 is a wasteful number, since it uses less digits than its factorization.

1605416774320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599773 (or 599767 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 1605416774320 in words is "one trillion, six hundred five billion, four hundred sixteen million, seven hundred seventy-four thousand, three hundred twenty".