1685305876432 has 10 divisors (see below), whose sum is σ = 3265280135618. Its totient is φ = 842652938208.

The previous prime is 1685305876403. The next prime is 1685305876459. The reversal of 1685305876432 is 2346785035861.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1653734272576 + 31571603856 = 1285976^2 + 177684^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 52665808623 + ... + 52665808654.

Almost surely, 2^{1685305876432} is an apocalyptic number.

It is an amenable number.

1685305876432 is a deficient number, since it is larger than the sum of its proper divisors (1579974259186).

1685305876432 is a wasteful number, since it uses less digits than its factorization.

1685305876432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105331617285 (or 105331617279 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 58.

The spelling of 1685305876432 in words is "one trillion, six hundred eighty-five billion, three hundred five million, eight hundred seventy-six thousand, four hundred thirty-two".