16285885405 has 16 divisors (see below), whose sum is σ = 20076726960. Its totient is φ = 12673124352.

The previous prime is 16285885391. The next prime is 16285885409. The reversal of 16285885405 is 50458858261.

It can be written as a sum of positive squares in 8 ways, for example, as 4181044921 + 12104840484 = 64661^2 + 110022^2 .

It is a cyclic number.

It is not a de Polignac number, because 16285885405 - 2⁵ = 16285885373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16285885409) 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, 825901 + ... + 845389.

It is an arithmetic number, because the mean of its divisors is an integer number (1254795435).

Almost surely, 2^16285885405 is an apocalyptic number.

It is an amenable number.

16285885405 is a deficient number, since it is larger than the sum of its proper divisors (3790841555).

16285885405 is a wasteful number, since it uses less digits than its factorization.

16285885405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24048.

The product of its (nonzero) digits is 3072000, while the sum is 52.

The spelling of 16285885405 in words is "sixteen billion, two hundred eighty-five million, eight hundred eighty-five thousand, four hundred five".