305112721152 has 72 divisors (see below), whose sum is σ = 812444533264. Its totient is φ = 101654175744.

The previous prime is 305112721129. The next prime is 305112721153. The reversal of 305112721152 is 251127211503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305112721153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1479948 + ... + 1673460.

Almost surely, 2^305112721152 is an apocalyptic number.

305112721152 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

305112721152 is an abundant number, since it is smaller than the sum of its proper divisors (507331812112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305112721152 is a wasteful number, since it uses less digits than its factorization.

305112721152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195585 (or 195571 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 305112721152 its reverse (251127211503), we get a palindrome (556239932655).

The spelling of 305112721152 in words is "three hundred five billion, one hundred twelve million, seven hundred twenty-one thousand, one hundred fifty-two".