30840683606669 has 2 divisors, whose sum is σ = 30840683606670. Its totient is φ = 30840683606668.

The previous prime is 30840683606657. The next prime is 30840683606693. The reversal of 30840683606669 is 96660638604803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18187452855625 + 12653230751044 = 4264675^2 + 3557138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30840683606669 is a prime.

It is a super-2 number, since 2×30840683606669² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30840683606869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15420341803334 + 15420341803335.

It is an arithmetic number, because the mean of its divisors is an integer number (15420341803335).

Almost surely, 2^{30840683606669} is an apocalyptic number.

It is an amenable number.

30840683606669 is a deficient number, since it is larger than the sum of its proper divisors (1).

30840683606669 is an equidigital number, since it uses as much as digits as its factorization.

30840683606669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161243136, while the sum is 65.

The spelling of 30840683606669 in words is "thirty trillion, eight hundred forty billion, six hundred eighty-three million, six hundred six thousand, six hundred sixty-nine".