309090006636 has 12 divisors (see below), whose sum is σ = 721210015512. Its totient is φ = 103030002208.

The previous prime is 309090006613. The next prime is 309090006661. The reversal of 309090006636 is 636600090903.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12878750265 + ... + 12878750288.

It is an arithmetic number, because the mean of its divisors is an integer number (60100834626).

Almost surely, 2^309090006636 is an apocalyptic number.

It is an amenable number.

309090006636 is an abundant number, since it is smaller than the sum of its proper divisors (412120008876).

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

309090006636 is a wasteful number, since it uses less digits than its factorization.

309090006636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25757500560 (or 25757500558 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 42.

The spelling of 309090006636 in words is "three hundred nine billion, ninety million, six thousand, six hundred thirty-six".