1605425642736 has 40 divisors (see below), whose sum is σ = 4172793459840. Its totient is φ = 531858799296.

The previous prime is 1605425642669. The next prime is 1605425642771. The reversal of 1605425642736 is 6372465245061.

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 7 ways as a sum of consecutive naturals, for example, 102588396 + ... + 102604043.

It is an arithmetic number, because the mean of its divisors is an integer number (104319836496).

Almost surely, 2^{1605425642736} is an apocalyptic number.

1605425642736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1605425642736 is an abundant number, since it is smaller than the sum of its proper divisors (2567367817104).

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

1605425642736 is a wasteful number, since it uses less digits than its factorization.

1605425642736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205192613 (or 205192607 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 1605425642736 in words is "one trillion, six hundred five billion, four hundred twenty-five million, six hundred forty-two thousand, seven hundred thirty-six".