305138829216 has 48 divisors (see below), whose sum is σ = 862604001504. Its totient is φ = 93888870144.

The previous prime is 305138829167. The next prime is 305138829223. The reversal of 305138829216 is 612928831503.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×305138829216² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122249886 + ... + 122252381.

It is an arithmetic number, because the mean of its divisors is an integer number (17970916698).

Almost surely, 2^305138829216 is an apocalyptic number.

It is an amenable number.

305138829216 is an abundant number, since it is smaller than the sum of its proper divisors (557465172288).

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

305138829216 is a wasteful number, since it uses less digits than its factorization.

305138829216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244502293 (or 244502285 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 305138829216 in words is "three hundred five billion, one hundred thirty-eight million, eight hundred twenty-nine thousand, two hundred sixteen".