305805317152 has 24 divisors (see below), whose sum is σ = 616738470012. Its totient is φ = 149173324800.

The previous prime is 305805317107. The next prime is 305805317177. The reversal of 305805317152 is 251713508503.

It can be written as a sum of positive squares in 2 ways, for example, as 217189553296 + 88615763856 = 466036^2 + 297684^2 .

It is a super-2 number, since 2×305805317152² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 116540349 + ... + 116542972.

Almost surely, 2^305805317152 is an apocalyptic number.

305805317152 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

305805317152 is an abundant number, since it is smaller than the sum of its proper divisors (310933152860).

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

305805317152 is a wasteful number, since it uses less digits than its factorization.

305805317152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233083372 (or 233083364 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 305805317152 in words is "three hundred five billion, eight hundred five million, three hundred seventeen thousand, one hundred fifty-two".