2011505412 has 96 divisors (see below), whose sum is σ = 5451328512. Its totient is φ = 565439616.

The previous prime is 2011505383. The next prime is 2011505413. The reversal of 2011505412 is 2145051102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2011505413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1464358 + ... + 1465730.

It is an arithmetic number, because the mean of its divisors is an integer number (56784672).

Almost surely, 2^2011505412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011505412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2725664256).

2011505412 is an abundant number, since it is smaller than the sum of its proper divisors (3439823100).

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

2011505412 is a wasteful number, since it uses less digits than its factorization.

2011505412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2011505412 is about 44849.8094979232. The cubic root of 2011505412 is about 1262.3324169549.

Adding to 2011505412 its reverse (2145051102), we get a palindrome (4156556514).

The spelling of 2011505412 in words is "two billion, eleven million, five hundred five thousand, four hundred twelve".