20011853171376 has 400 divisors, whose sum is σ = 63609780165888. Its totient is φ = 6048507168000.

The previous prime is 20011853171279. The next prime is 20011853171389. The reversal of 20011853171376 is 67317135811002.

20011853171376 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 18 + 531 + 71 + 37 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1375283301 + ... + 1375297851.

Almost surely, 2^{20011853171376} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20011853171376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31804890082944).

20011853171376 is an abundant number, since it is smaller than the sum of its proper divisors (43597926994512).

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

20011853171376 is an equidigital number, since it uses as much as digits as its factorization.

20011853171376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14994 (or 14964 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

Adding to 20011853171376 its reverse (67317135811002), we get a palindrome (87328988982378).

The spelling of 20011853171376 in words is "twenty trillion, eleven billion, eight hundred fifty-three million, one hundred seventy-one thousand, three hundred seventy-six".