30523072057 has 2 divisors, whose sum is σ = 30523072058. Its totient is φ = 30523072056.

The previous prime is 30523072051. The next prime is 30523072081. The reversal of 30523072057 is 75027032503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27867628096 + 2655443961 = 166936^2 + 51531^2 .

It is an emirp because it is prime and its reverse (75027032503) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30523072057 is a prime.

It is a super-2 number, since 2×30523072057² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30523072051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15261536028 + 15261536029.

It is an arithmetic number, because the mean of its divisors is an integer number (15261536029).

Almost surely, 2^30523072057 is an apocalyptic number.

It is an amenable number.

30523072057 is a deficient number, since it is larger than the sum of its proper divisors (1).

30523072057 is an equidigital number, since it uses as much as digits as its factorization.

30523072057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 34.

The spelling of 30523072057 in words is "thirty billion, five hundred twenty-three million, seventy-two thousand, fifty-seven".