20160211104 has 144 divisors (see below), whose sum is σ = 63568368864. Its totient is φ = 6008947200.

The previous prime is 20160211081. The next prime is 20160211111. The reversal of 20160211104 is 40111206102.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×20160211104² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141087 + ... + 245409.

It is an arithmetic number, because the mean of its divisors is an integer number (441447006).

Almost surely, 2^20160211104 is an apocalyptic number.

20160211104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20160211104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31784184432).

20160211104 is an abundant number, since it is smaller than the sum of its proper divisors (43408157760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20160211104 is a wasteful number, since it uses less digits than its factorization.

20160211104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104411 (or 104400 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20160211104 its reverse (40111206102), we get a palindrome (60271417206).

The spelling of 20160211104 in words is "twenty billion, one hundred sixty million, two hundred eleven thousand, one hundred four".