2123533545 has 16 divisors (see below), whose sum is σ = 3883032960. Its totient is φ = 970758144.

The previous prime is 2123533523. The next prime is 2123533561. The reversal of 2123533545 is 5453353212.

It is not a de Polignac number, because 2123533545 - 2⁵ = 2123533513 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10111960 + ... + 10112169.

It is an arithmetic number, because the mean of its divisors is an integer number (242689560).

Almost surely, 2^2123533545 is an apocalyptic number.

It is an amenable number.

2123533545 is a deficient number, since it is larger than the sum of its proper divisors (1759499415).

2123533545 is a wasteful number, since it uses less digits than its factorization.

2123533545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20224144.

The product of its digits is 54000, while the sum is 33.

The square root of 2123533545 is about 46081.8136036333. The cubic root of 2123533545 is about 1285.3449885485.

Adding to 2123533545 its reverse (5453353212), we get a palindrome (7576886757).

The spelling of 2123533545 in words is "two billion, one hundred twenty-three million, five hundred thirty-three thousand, five hundred forty-five".