306640062500 has 42 divisors (see below), whose sum is σ = 670766687514. Its totient is φ = 122656000000.

The previous prime is 306640062497. The next prime is 306640062587. The reversal of 306640062500 is 5260046603.

It can be written as a sum of positive squares in 7 ways, for example, as 269010270244 + 37629792256 = 518662^2 + 193984^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2390621 + ... + 2515620.

It is an arithmetic number, because the mean of its divisors is an integer number (15970635417).

Almost surely, 2^306640062500 is an apocalyptic number.

It is an amenable number.

306640062500 is an abundant number, since it is smaller than the sum of its proper divisors (364126625014).

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

306640062500 is an frugal number, since it uses more digits than its factorization.

306640062500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4906275 (or 4906248 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 306640062500 in words is "three hundred six billion, six hundred forty million, sixty-two thousand, five hundred".