20854086253108 has 6 divisors (see below), whose sum is σ = 36494650942946. Its totient is φ = 10427043126552.

The previous prime is 20854086253097. The next prime is 20854086253213. The reversal of 20854086253108 is 80135268045802.

It can be written as a sum of positive squares in only one way, i.e., 14228496996624 + 6625589256484 = 3772068^2 + 2574022^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2606760781635 + ... + 2606760781642.

Almost surely, 2^{20854086253108} is an apocalyptic number.

It is an amenable number.

20854086253108 is a deficient number, since it is larger than the sum of its proper divisors (15640564689838).

20854086253108 is a wasteful number, since it uses less digits than its factorization.

20854086253108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213521563281 (or 5213521563279 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 52.

The spelling of 20854086253108 in words is "twenty trillion, eight hundred fifty-four billion, eighty-six million, two hundred fifty-three thousand, one hundred eight".