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20611113201 = 337109053509
BaseRepresentation
bin10011001100100001…
…001010000011110001
31222012102110000222000
4103030201022003301
5314202421110301
613245115404213
71326522400020
oct231441120361
958172400860
1020611113201
118817488458
123bb2753669
131c36194993
14dd75228b7
15809731786
hex4cc84a0f1

20611113201 has 16 divisors (see below), whose sum is σ = 34897123200. Its totient is φ = 11777778864.

The previous prime is 20611113143. The next prime is 20611113203. The reversal of 20611113201 is 10231111602.

20611113201 is a `hidden beast` number, since 20 + 611 + 1 + 1 + 32 + 0 + 1 = 666.

It is not a de Polignac number, because 20611113201 - 26 = 20611113137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20611113203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54526566 + ... + 54526943.

It is an arithmetic number, because the mean of its divisors is an integer number (2181070200).

Almost surely, 220611113201 is an apocalyptic number.

20611113201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20611113201 is a deficient number, since it is larger than the sum of its proper divisors (14286009999).

20611113201 is a wasteful number, since it uses less digits than its factorization.

20611113201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109053525 (or 109053519 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 20611113201 its reverse (10231111602), we get a palindrome (30842224803).

The spelling of 20611113201 in words is "twenty billion, six hundred eleven million, one hundred thirteen thousand, two hundred one".

Divisors: 1 3 7 9 21 27 63 189 109053509 327160527 763374563 981481581 2290123689 2944444743 6870371067 20611113201