2011545205 has 16 divisors (see below), whose sum is σ = 2513793024. Its totient is φ = 1543530240.

The previous prime is 2011545161. The next prime is 2011545271. The reversal of 2011545205 is 5025451102.

It is not a de Polignac number, because 2011545205 - 2¹⁷ = 2011414133 is a prime.

It is a super-2 number, since 2×2011545205² = 8092628223516984050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011545205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39909 + ... + 74938.

It is an arithmetic number, because the mean of its divisors is an integer number (157112064).

Almost surely, 2^2011545205 is an apocalyptic number.

It is an amenable number.

2011545205 is a deficient number, since it is larger than the sum of its proper divisors (502247819).

2011545205 is a wasteful number, since it uses less digits than its factorization.

2011545205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114996.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2011545205 is about 44850.2531208019. The cubic root of 2011545205 is about 1262.3407410129.

Adding to 2011545205 its reverse (5025451102), we get a palindrome (7036996307).

The spelling of 2011545205 in words is "two billion, eleven million, five hundred forty-five thousand, two hundred five".