20168300256 has 48 divisors (see below), whose sum is σ = 57014236944. Its totient is φ = 6205630464.

The previous prime is 20168300249. The next prime is 20168300293. The reversal of 20168300256 is 65200386102.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8079001 + ... + 8081496.

It is an arithmetic number, because the mean of its divisors is an integer number (1187796603).

Almost surely, 2^20168300256 is an apocalyptic number.

20168300256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20168300256 is an abundant number, since it is smaller than the sum of its proper divisors (36845936688).

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

20168300256 is a wasteful number, since it uses less digits than its factorization.

20168300256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16160523 (or 16160515 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 20168300256 its reverse (65200386102), we get a palindrome (85368686358).

The spelling of 20168300256 in words is "twenty billion, one hundred sixty-eight million, three hundred thousand, two hundred fifty-six".