20255167171608 has 64 divisors (see below), whose sum is σ = 52007200331520. Its totient is φ = 6569156246400.

The previous prime is 20255167171573. The next prime is 20255167171661. The reversal of 20255167171608 is 80617176155202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125954373 + ... + 126115083.

It is an arithmetic number, because the mean of its divisors is an integer number (812612505180).

Almost surely, 2^{20255167171608} is an apocalyptic number.

It is an amenable number.

20255167171608 is an abundant number, since it is smaller than the sum of its proper divisors (31752033159912).

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

20255167171608 is a wasteful number, since it uses less digits than its factorization.

20255167171608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302688 (or 302684 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 20255167171608 in words is "twenty trillion, two hundred fifty-five billion, one hundred sixty-seven million, one hundred seventy-one thousand, six hundred eight".