20950451913156 has 24 divisors (see below), whose sum is σ = 48885396272160. Its totient is φ = 6983339903232.

The previous prime is 20950451913109. The next prime is 20950451913161. The reversal of 20950451913156 is 65131915405902.

It is a junction number, because it is equal to n+sod(n) for n = 20950451913099 and 20950451913108.

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, 17401741 + ... + 18566676.

It is an arithmetic number, because the mean of its divisors is an integer number (2036891511340).

Almost surely, 2^{20950451913156} is an apocalyptic number.

It is an amenable number.

20950451913156 is an abundant number, since it is smaller than the sum of its proper divisors (27934944359004).

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

20950451913156 is a wasteful number, since it uses less digits than its factorization.

20950451913156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36016963 (or 36016961 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 51.

The spelling of 20950451913156 in words is "twenty trillion, nine hundred fifty billion, four hundred fifty-one million, nine hundred thirteen thousand, one hundred fifty-six".