1685652534380 has 24 divisors (see below), whose sum is σ = 3615186714048. Its totient is φ = 659915034368.

The previous prime is 1685652534373. The next prime is 1685652534389. The reversal of 1685652534380 is 834352565861.

It is not an unprimeable number, because it can be changed into a prime (1685652534389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896622749 + ... + 896624628.

It is an arithmetic number, because the mean of its divisors is an integer number (150632779752).

Almost surely, 2^{1685652534380} is an apocalyptic number.

1685652534380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1685652534380 is an abundant number, since it is smaller than the sum of its proper divisors (1929534179668).

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

1685652534380 is a wasteful number, since it uses less digits than its factorization.

1685652534380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793247433 (or 1793247431 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 56.

The spelling of 1685652534380 in words is "one trillion, six hundred eighty-five billion, six hundred fifty-two million, five hundred thirty-four thousand, three hundred eighty".