309806209088 has 28 divisors (see below), whose sum is σ = 647128103760. Its totient is φ = 146750308992.

The previous prime is 309806209087. The next prime is 309806209127. The reversal of 309806209088 is 880902608903.

It is not an unprimeable number, because it can be changed into a prime (309806209087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127386206 + ... + 127388637.

Almost surely, 2^309806209088 is an apocalyptic number.

309806209088 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

309806209088 is an abundant number, since it is smaller than the sum of its proper divisors (337321894672).

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

309806209088 is a wasteful number, since it uses less digits than its factorization.

309806209088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254774874 (or 254774864 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 309806209088 in words is "three hundred nine billion, eight hundred six million, two hundred nine thousand, eighty-eight".