305128643090 has 16 divisors (see below), whose sum is σ = 550761456960. Its totient is φ = 121711479600.

The previous prime is 305128643081. The next prime is 305128643093. The reversal of 305128643090 is 90346821503.

It is not an unprimeable number, because it can be changed into a prime (305128643093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42493436 + ... + 42500615.

It is an arithmetic number, because the mean of its divisors is an integer number (34422591060).

Almost surely, 2^305128643090 is an apocalyptic number.

305128643090 is a deficient number, since it is larger than the sum of its proper divisors (245632813870).

305128643090 is a wasteful number, since it uses less digits than its factorization.

305128643090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84994417.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 305128643090 in words is "three hundred five billion, one hundred twenty-eight million, six hundred forty-three thousand, ninety".