305212404240164 has 18 divisors (see below), whose sum is σ = 543021343528482. Its totient is φ = 150104461094400.

The previous prime is 305212404240151. The next prime is 305212404240197. The reversal of 305212404240164 is 461042404212503.

It can be written as a sum of positive squares in 3 ways, for example, as 83903401614400 + 221309002625764 = 9159880^2 + 14876458^2 .

It is a super-2 number, since 2×305212404240164² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10253022077 + ... + 10253051844.

It is an arithmetic number, because the mean of its divisors is an integer number (30167852418249).

Almost surely, 2^{305212404240164} is an apocalyptic number.

It is an amenable number.

305212404240164 is a deficient number, since it is larger than the sum of its proper divisors (237808939288318).

305212404240164 is a wasteful number, since it uses less digits than its factorization.

305212404240164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20506074047 (or 20506073984 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 38.

Adding to 305212404240164 its reverse (461042404212503), we get a palindrome (766254808452667).

The spelling of 305212404240164 in words is "three hundred five trillion, two hundred twelve billion, four hundred four million, two hundred forty thousand, one hundred sixty-four".