809336121652 has 24 divisors (see below), whose sum is σ = 1502393889024. Its totient is φ = 380167761792.

The previous prime is 809336121617. The next prime is 809336121661. The reversal of 809336121652 is 256121633908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10842148 + ... + 10916539.

It is an arithmetic number, because the mean of its divisors is an integer number (62599745376).

Almost surely, 2^809336121652 is an apocalyptic number.

It is an amenable number.

809336121652 is a deficient number, since it is larger than the sum of its proper divisors (693057767372).

809336121652 is a wasteful number, since it uses less digits than its factorization.

809336121652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21759255 (or 21759253 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 809336121652 in words is "eight hundred nine billion, three hundred thirty-six million, one hundred twenty-one thousand, six hundred fifty-two".