2111523445 has 16 divisors (see below), whose sum is σ = 2593285632. Its totient is φ = 1649868480.

The previous prime is 2111523443. The next prime is 2111523481. The reversal of 2111523445 is 5443251112.

It is not a de Polignac number, because 2111523445 - 2¹ = 2111523443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111523443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41230 + ... + 76960.

It is an arithmetic number, because the mean of its divisors is an integer number (162080352).

Almost surely, 2^2111523445 is an apocalyptic number.

It is an amenable number.

2111523445 is a deficient number, since it is larger than the sum of its proper divisors (481762187).

2111523445 is a wasteful number, since it uses less digits than its factorization.

2111523445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36012.

The product of its digits is 4800, while the sum is 28.

The square root of 2111523445 is about 45951.3160312085. The cubic root of 2111523445 is about 1282.9172243275.

Adding to 2111523445 its reverse (5443251112), we get a palindrome (7554774557).

The spelling of 2111523445 in words is "two billion, one hundred eleven million, five hundred twenty-three thousand, four hundred forty-five".