1685016525133 has 2 divisors, whose sum is σ = 1685016525134. Its totient is φ = 1685016525132.

The previous prime is 1685016525109. The next prime is 1685016525229. The reversal of 1685016525133 is 3315256105861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1128400556644 + 556615968489 = 1062262^2 + 746067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1685016525133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1685016225133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842508262566 + 842508262567.

It is an arithmetic number, because the mean of its divisors is an integer number (842508262567).

Almost surely, 2^{1685016525133} is an apocalyptic number.

It is an amenable number.

1685016525133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685016525133 is an equidigital number, since it uses as much as digits as its factorization.

1685016525133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 1685016525133 in words is "one trillion, six hundred eighty-five billion, sixteen million, five hundred twenty-five thousand, one hundred thirty-three".