20317651832 has 8 divisors (see below), whose sum is σ = 38095597200. Its totient is φ = 10158825912.

The previous prime is 20317651829. The next prime is 20317651859. The reversal of 20317651832 is 23815671302.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1269853232 + ... + 1269853247.

It is an arithmetic number, because the mean of its divisors is an integer number (4761949650).

Almost surely, 2^20317651832 is an apocalyptic number.

It is an amenable number.

20317651832 is a deficient number, since it is larger than the sum of its proper divisors (17777945368).

20317651832 is a wasteful number, since it uses less digits than its factorization.

20317651832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539706485 (or 2539706481 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 20317651832 in words is "twenty billion, three hundred seventeen million, six hundred fifty-one thousand, eight hundred thirty-two".