2113016400 has 180 divisors, whose sum is σ = 7999517760. Its totient is φ = 512236800.

The previous prime is 2113016369. The next prime is 2113016413. The reversal of 2113016400 is 46103112.

It is a happy number.

2113016400 is a `hidden beast` number, since 21 + 1 + 3 + 0 + 1 + 640 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12921 + ... + 66279.

Almost surely, 2^2113016400 is an apocalyptic number.

2113016400 is a gapful number since it is divisible by the number (20) 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 2113016400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3999758880).

2113016400 is an abundant number, since it is smaller than the sum of its proper divisors (5886501360).

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

2113016400 is a wasteful number, since it uses less digits than its factorization.

2113016400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53394 (or 53380 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2113016400 is about 45967.5581252692. The cubic root of 2113016400 is about 1283.2195157769.

Adding to 2113016400 its reverse (46103112), we get a palindrome (2159119512).

The spelling of 2113016400 in words is "two billion, one hundred thirteen million, sixteen thousand, four hundred".