30020605897 has 2 divisors, whose sum is σ = 30020605898. Its totient is φ = 30020605896.

The previous prime is 30020605837. The next prime is 30020605913. The reversal of 30020605897 is 79850602003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20180759481 + 9839846416 = 142059^2 + 99196^2 .

It is a cyclic number.

It is not a de Polignac number, because 30020605897 - 2¹⁵ = 30020573129 is a prime.

It is not a weakly prime, because it can be changed into another prime (30020605807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010302948 + 15010302949.

It is an arithmetic number, because the mean of its divisors is an integer number (15010302949).

Almost surely, 2^30020605897 is an apocalyptic number.

It is an amenable number.

30020605897 is a deficient number, since it is larger than the sum of its proper divisors (1).

30020605897 is an equidigital number, since it uses as much as digits as its factorization.

30020605897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 30020605897 in words is "thirty billion, twenty million, six hundred five thousand, eight hundred ninety-seven".