20255167171616 has 48 divisors (see below), whose sum is σ = 42981776578944. Its totient is φ = 9340500175104.

The previous prime is 20255167171573. The next prime is 20255167171661. The reversal of 20255167171616 is 61617176155202.

It is a super-2 number, since 2×20255167171616² (a number of 27 digits) contains 22 as substring.

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, 20449256 + ... + 21416871.

It is an arithmetic number, because the mean of its divisors is an integer number (895453678728).

Almost surely, 2^{20255167171616} is an apocalyptic number.

20255167171616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20255167171616 is an abundant number, since it is smaller than the sum of its proper divisors (22726609407328).

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

20255167171616 is a wasteful number, since it uses less digits than its factorization.

20255167171616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41867313 (or 41867305 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 20255167171616 in words is "twenty trillion, two hundred fifty-five billion, one hundred sixty-seven million, one hundred seventy-one thousand, six hundred sixteen".