30372520320061 has 2 divisors, whose sum is σ = 30372520320062. Its totient is φ = 30372520320060.

The previous prime is 30372520319957. The next prime is 30372520320073. The reversal of 30372520320061 is 16002302527303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21849734896900 + 8522785423161 = 4674370^2 + 2919381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30372520320061 is a prime.

It is a super-3 number, since 3×30372520320061³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30372520319999 and 30372520320026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30372520320091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15186260160030 + 15186260160031.

It is an arithmetic number, because the mean of its divisors is an integer number (15186260160031).

Almost surely, 2^{30372520320061} is an apocalyptic number.

It is an amenable number.

30372520320061 is a deficient number, since it is larger than the sum of its proper divisors (1).

30372520320061 is an equidigital number, since it uses as much as digits as its factorization.

30372520320061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

Adding to 30372520320061 its reverse (16002302527303), we get a palindrome (46374822847364).

The spelling of 30372520320061 in words is "thirty trillion, three hundred seventy-two billion, five hundred twenty million, three hundred twenty thousand, sixty-one".