30766211897 has 2 divisors, whose sum is σ = 30766211898. Its totient is φ = 30766211896.

The previous prime is 30766211867. The next prime is 30766211923. The reversal of 30766211897 is 79811266703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28785872896 + 1980339001 = 169664^2 + 44501^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30766211897 is a prime.

It is a super-2 number, since 2×30766211897² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30766211837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15383105948 + 15383105949.

It is an arithmetic number, because the mean of its divisors is an integer number (15383105949).

Almost surely, 2^30766211897 is an apocalyptic number.

It is an amenable number.

30766211897 is a deficient number, since it is larger than the sum of its proper divisors (1).

30766211897 is an equidigital number, since it uses as much as digits as its factorization.

30766211897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 30766211897 in words is "thirty billion, seven hundred sixty-six million, two hundred eleven thousand, eight hundred ninety-seven".