20216060109 has 56 divisors (see below), whose sum is σ = 35835010560. Its totient is φ = 11153606688.

The previous prime is 20216060107. The next prime is 20216060129. The reversal of 20216060109 is 90106061202.

20216060109 is a `hidden beast` number, since 20 + 21 + 606 + 0 + 10 + 9 = 666.

It is not a de Polignac number, because 20216060109 - 2¹ = 20216060107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20216060107) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 79684 + ... + 216290.

Almost surely, 2^20216060109 is an apocalyptic number.

20216060109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20216060109 is a deficient number, since it is larger than the sum of its proper divisors (15618950451).

20216060109 is an equidigital number, since it uses as much as digits as its factorization.

20216060109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136661 (or 136646 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 20216060109 in words is "twenty billion, two hundred sixteen million, sixty thousand, one hundred nine".