245305134212 has 6 divisors (see below), whose sum is σ = 429283984878. Its totient is φ = 122652567104.

The previous prime is 245305134211. The next prime is 245305134229. The reversal of 245305134212 is 212431503542.

It can be written as a sum of positive squares in only one way, i.e., 231145562176 + 14159572036 = 480776^2 + 118994^2 .

It is not an unprimeable number, because it can be changed into a prime (245305134211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30663141773 + ... + 30663141780.

It is an arithmetic number, because the mean of its divisors is an integer number (71547330813).

Almost surely, 2^245305134212 is an apocalyptic number.

It is an amenable number.

245305134212 is a deficient number, since it is larger than the sum of its proper divisors (183978850666).

245305134212 is a wasteful number, since it uses less digits than its factorization.

245305134212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61326283557 (or 61326283555 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 245305134212 its reverse (212431503542), we get a palindrome (457736637754).

The spelling of 245305134212 in words is "two hundred forty-five billion, three hundred five million, one hundred thirty-four thousand, two hundred twelve".