20777274241867 has 32 divisors (see below), whose sum is σ = 25006199823360. Its totient is φ = 17009418528000.

The previous prime is 20777274241859. The next prime is 20777274241897. The reversal of 20777274241867 is 76814247277702.

It is a cyclic number.

It is not a de Polignac number, because 20777274241867 - 2³ = 20777274241859 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20777274241799 and 20777274241808.

It is not an unprimeable number, because it can be changed into a prime (20777274241897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146380942 + ... + 146522812.

It is an arithmetic number, because the mean of its divisors is an integer number (781443744480).

Almost surely, 2^{20777274241867} is an apocalyptic number.

20777274241867 is a deficient number, since it is larger than the sum of its proper divisors (4228925581493).

20777274241867 is a wasteful number, since it uses less digits than its factorization.

20777274241867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166915.

The product of its (nonzero) digits is 103262208, while the sum is 64.

The spelling of 20777274241867 in words is "twenty trillion, seven hundred seventy-seven billion, two hundred seventy-four million, two hundred forty-one thousand, eight hundred sixty-seven".