2143345545 has 48 divisors (see below), whose sum is σ = 4071255552. Its totient is φ = 1034484480.

The previous prime is 2143345541. The next prime is 2143345553. The reversal of 2143345545 is 5455433412.

It is not a de Polignac number, because 2143345545 - 2² = 2143345541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143345541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100677 + ... + 120093.

It is an arithmetic number, because the mean of its divisors is an integer number (84817824).

Almost surely, 2^2143345545 is an apocalyptic number.

It is an amenable number.

2143345545 is a deficient number, since it is larger than the sum of its proper divisors (1927910007).

2143345545 is a wasteful number, since it uses less digits than its factorization.

2143345545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19662 (or 19659 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 2143345545 is about 46296.2800341453. The cubic root of 2143345545 is about 1289.3299296302.

Adding to 2143345545 its reverse (5455433412), we get a palindrome (7598778957).

The spelling of 2143345545 in words is "two billion, one hundred forty-three million, three hundred forty-five thousand, five hundred forty-five".