1605694150428 has 96 divisors (see below), whose sum is σ = 4037429733120. Its totient is φ = 494818360320.

The previous prime is 1605694150393. The next prime is 1605694150439. The reversal of 1605694150428 is 8240514965061.

It is a Harshad number since it is a multiple of its sum of digits (51).

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 31 ways as a sum of consecutive naturals, for example, 15390198 + ... + 15494178.

It is an arithmetic number, because the mean of its divisors is an integer number (42056559720).

Almost surely, 2^{1605694150428} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1605694150428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2018714866560).

1605694150428 is an abundant number, since it is smaller than the sum of its proper divisors (2431735582692).

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

1605694150428 is a wasteful number, since it uses less digits than its factorization.

1605694150428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105347 (or 105345 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 1605694150428 in words is "one trillion, six hundred five billion, six hundred ninety-four million, one hundred fifty thousand, four hundred twenty-eight".