304985249785057 has 2 divisors, whose sum is σ = 304985249785058. Its totient is φ = 304985249785056.

The previous prime is 304985249784997. The next prime is 304985249785067. The reversal of 304985249785057 is 750587942589403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294470542100736 + 10514707684321 = 17160144^2 + 3242639^2 .

It is a cyclic number.

It is not a de Polignac number, because 304985249785057 - 2²³ = 304985241396449 is a prime.

It is a super-2 number, since 2×304985249785057² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (304985249785067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152492624892528 + 152492624892529.

It is an arithmetic number, because the mean of its divisors is an integer number (152492624892529).

Almost surely, 2^{304985249785057} is an apocalyptic number.

It is an amenable number.

304985249785057 is a deficient number, since it is larger than the sum of its proper divisors (1).

304985249785057 is an equidigital number, since it uses as much as digits as its factorization.

304985249785057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192000, while the sum is 76.

The spelling of 304985249785057 in words is "three hundred four trillion, nine hundred eighty-five billion, two hundred forty-nine million, seven hundred eighty-five thousand, fifty-seven".