30817838057 has 2 divisors, whose sum is σ = 30817838058. Its totient is φ = 30817838056.

The previous prime is 30817838053. The next prime is 30817838071. The reversal of 30817838057 is 75083871803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21039792601 + 9778045456 = 145051^2 + 98884^2 .

It is a cyclic number.

It is not a de Polignac number, because 30817838057 - 2² = 30817838053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30817837996 and 30817838014.

It is not a weakly prime, because it can be changed into another prime (30817838053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15408919028 + 15408919029.

It is an arithmetic number, because the mean of its divisors is an integer number (15408919029).

Almost surely, 2^30817838057 is an apocalyptic number.

It is an amenable number.

30817838057 is a deficient number, since it is larger than the sum of its proper divisors (1).

30817838057 is an equidigital number, since it uses as much as digits as its factorization.

30817838057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 30817838057 in words is "thirty billion, eight hundred seventeen million, eight hundred thirty-eight thousand, fifty-seven".