1605726087133 has 16 divisors (see below), whose sum is σ = 1836475597440. Its totient is φ = 1375316983296.

The previous prime is 1605726087089. The next prime is 1605726087181. The reversal of 1605726087133 is 3317806275061.

It is a cyclic number.

It is not a de Polignac number, because 1605726087133 - 2¹⁷ = 1605725956061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605726085133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61048041 + ... + 61074337.

It is an arithmetic number, because the mean of its divisors is an integer number (114779724840).

Almost surely, 2^{1605726087133} is an apocalyptic number.

It is an amenable number.

1605726087133 is a deficient number, since it is larger than the sum of its proper divisors (230749510307).

1605726087133 is a wasteful number, since it uses less digits than its factorization.

1605726087133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32436.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 1605726087133 in words is "one trillion, six hundred five billion, seven hundred twenty-six million, eighty-seven thousand, one hundred thirty-three".