305421260616 has 96 divisors (see below), whose sum is σ = 839929072320. Its totient is φ = 100242038400.

The previous prime is 305421260611. The next prime is 305421260659. The reversal of 305421260616 is 616062124503.

305421260616 is a `hidden beast` number, since 3 + 0 + 5 + 42 + 1 + 2 + 606 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (305421260611) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3912931 + ... + 3990221.

It is an arithmetic number, because the mean of its divisors is an integer number (8749261170).

Almost surely, 2^305421260616 is an apocalyptic number.

305421260616 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305421260616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (419964536160).

305421260616 is an abundant number, since it is smaller than the sum of its proper divisors (534507811704).

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

305421260616 is a wasteful number, since it uses less digits than its factorization.

305421260616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78147 (or 78140 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 305421260616 in words is "three hundred five billion, four hundred twenty-one million, two hundred sixty thousand, six hundred sixteen".