30856305539573 has 2 divisors, whose sum is σ = 30856305539574. Its totient is φ = 30856305539572.

The previous prime is 30856305539569. The next prime is 30856305539581. The reversal of 30856305539573 is 37593550365803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29033054862289 + 1823250677284 = 5388233^2 + 1350278^2 .

It is an emirp because it is prime and its reverse (37593550365803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30856305539573 - 2² = 30856305539569 is a prime.

It is a super-2 number, since 2×30856305539573² (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 (30856305539593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15428152769786 + 15428152769787.

It is an arithmetic number, because the mean of its divisors is an integer number (15428152769787).

Almost surely, 2^{30856305539573} is an apocalyptic number.

It is an amenable number.

30856305539573 is a deficient number, since it is larger than the sum of its proper divisors (1).

30856305539573 is an equidigital number, since it uses as much as digits as its factorization.

30856305539573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090000, while the sum is 62.

The spelling of 30856305539573 in words is "thirty trillion, eight hundred fifty-six billion, three hundred five million, five hundred thirty-nine thousand, five hundred seventy-three".