30620106520621 has 2 divisors, whose sum is σ = 30620106520622. Its totient is φ = 30620106520620.

The previous prime is 30620106520603. The next prime is 30620106520649. The reversal of 30620106520621 is 12602560102603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19500049164996 + 11120057355625 = 4415886^2 + 3334675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30620106520621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30620106520021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15310053260310 + 15310053260311.

It is an arithmetic number, because the mean of its divisors is an integer number (15310053260311).

Almost surely, 2^{30620106520621} is an apocalyptic number.

It is an amenable number.

30620106520621 is a deficient number, since it is larger than the sum of its proper divisors (1).

30620106520621 is an equidigital number, since it uses as much as digits as its factorization.

30620106520621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 30620106520621 in words is "thirty trillion, six hundred twenty billion, one hundred six million, five hundred twenty thousand, six hundred twenty-one".