20660111710371 has 24 divisors (see below), whose sum is σ = 34106022345824. Its totient is φ = 11805625428480.

The previous prime is 20660111710369. The next prime is 20660111710373. The reversal of 20660111710371 is 17301711106602.

It is a happy number.

20660111710371 is a `hidden beast` number, since 2 + 0 + 6 + 601 + 1 + 1 + 7 + 10 + 37 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (20660111710369) and next prime (20660111710373).

It is not a de Polignac number, because 20660111710371 - 2¹ = 20660111710369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20660111710373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2881875 + ... + 7044531.

Almost surely, 2^{20660111710371} is an apocalyptic number.

20660111710371 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20660111710371 is a deficient number, since it is larger than the sum of its proper divisors (13445910635453).

20660111710371 is a wasteful number, since it uses less digits than its factorization.

20660111710371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241451 (or 4241448 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

Adding to 20660111710371 its reverse (17301711106602), we get a palindrome (37961822816973).

The spelling of 20660111710371 in words is "twenty trillion, six hundred sixty billion, one hundred eleven million, seven hundred ten thousand, three hundred seventy-one".