305412880821 has 8 divisors (see below), whose sum is σ = 421259146080. Its totient is φ = 196587601392.

The previous prime is 305412880819. The next prime is 305412880849. The reversal of 305412880821 is 128088214503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 305412880821 - 2¹ = 305412880819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305412880921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1755246355 + ... + 1755246528.

It is an arithmetic number, because the mean of its divisors is an integer number (52657393260).

Almost surely, 2^305412880821 is an apocalyptic number.

It is an amenable number.

305412880821 is a deficient number, since it is larger than the sum of its proper divisors (115846265259).

305412880821 is a wasteful number, since it uses less digits than its factorization.

305412880821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510492915.

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 305412880821 in words is "three hundred five billion, four hundred twelve million, eight hundred eighty thousand, eight hundred twenty-one".