1605602131740 has 168 divisors, whose sum is σ = 5352707540880. Its totient is φ = 402974590464.

The previous prime is 1605602131699. The next prime is 1605602131753. The reversal of 1605602131740 is 471312065061.

1605602131740 is a `hidden beast` number, since 1 + 6 + 0 + 5 + 602 + 1 + 3 + 1 + 7 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1605602131695 and 1605602131704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2991070 + ... + 3486789.

It is an arithmetic number, because the mean of its divisors is an integer number (31861354410).

Almost surely, 2^{1605602131740} is an apocalyptic number.

1605602131740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1605602131740 is an abundant number, since it is smaller than the sum of its proper divisors (3747105409140).

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

1605602131740 is a wasteful number, since it uses less digits than its factorization.

1605602131740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477903 (or 6477886 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 1605602131740 in words is "one trillion, six hundred five billion, six hundred two million, one hundred thirty-one thousand, seven hundred forty".