809226128916 has 30 divisors (see below), whose sum is σ = 2115476948970. Its totient is φ = 269742042864.

The previous prime is 809226128897. The next prime is 809226128923. The reversal of 809226128916 is 619821622908.

It is a happy number.

809226128916 is a `hidden beast` number, since 8 + 0 + 9 + 2 + 2 + 612 + 8 + 9 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 805050384516 + 4175744400 = 897246^2 + 64620^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1248805431 + ... + 1248806078.

It is an arithmetic number, because the mean of its divisors is an integer number (70515898299).

Almost surely, 2^809226128916 is an apocalyptic number.

It is an amenable number.

809226128916 is an abundant number, since it is smaller than the sum of its proper divisors (1306250820054).

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

809226128916 is a wasteful number, since it uses less digits than its factorization.

809226128916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497611525 (or 2497611514 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 809226128916 in words is "eight hundred nine billion, two hundred twenty-six million, one hundred twenty-eight thousand, nine hundred sixteen".