20886023235861 has 32 divisors (see below), whose sum is σ = 35788634219520. Its totient is φ = 11791076792112.

The previous prime is 20886023235817. The next prime is 20886023235863. The reversal of 20886023235861 is 16853232068802.

It is a happy number.

20886023235861 is a `hidden beast` number, since 2 + 0 + 8 + 8 + 602 + 3 + 23 + 5 + 8 + 6 + 1 = 666.

It is not a de Polignac number, because 20886023235861 - 2⁹ = 20886023235349 is a prime.

It is a super-3 number, since 3×20886023235861³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 20886023235798 and 20886023235807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20886023235863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 665695515 + ... + 665726888.

It is an arithmetic number, because the mean of its divisors is an integer number (1118394819360).

Almost surely, 2^{20886023235861} is an apocalyptic number.

20886023235861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20886023235861 is a deficient number, since it is larger than the sum of its proper divisors (14902610983659).

20886023235861 is a wasteful number, since it uses less digits than its factorization.

20886023235861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331422502 (or 1331422496 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 20886023235861 in words is "twenty trillion, eight hundred eighty-six billion, twenty-three million, two hundred thirty-five thousand, eight hundred sixty-one".