30539729897 has 2 divisors, whose sum is σ = 30539729898. Its totient is φ = 30539729896.

The previous prime is 30539729873. The next prime is 30539729921. The reversal of 30539729897 is 79892793503.

It is a balanced prime because it is at equal distance from previous prime (30539729873) and next prime (30539729921).

It can be written as a sum of positive squares in only one way, i.e., 30224170201 + 315559696 = 173851^2 + 17764^2 .

It is a cyclic number.

It is not a de Polignac number, because 30539729897 - 2⁶ = 30539729833 is a prime.

It is not a weakly prime, because it can be changed into another prime (30539729837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15269864948 + 15269864949.

It is an arithmetic number, because the mean of its divisors is an integer number (15269864949).

Almost surely, 2^30539729897 is an apocalyptic number.

It is an amenable number.

30539729897 is a deficient number, since it is larger than the sum of its proper divisors (1).

30539729897 is an equidigital number, since it uses as much as digits as its factorization.

30539729897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25719120, while the sum is 62.

The spelling of 30539729897 in words is "thirty billion, five hundred thirty-nine million, seven hundred twenty-nine thousand, eight hundred ninety-seven".