2143253456 has 10 divisors (see below), whose sum is σ = 4152553602. Its totient is φ = 1071626720.

The previous prime is 2143253449. The next prime is 2143253467. The reversal of 2143253456 is 6543523412.

It can be written as a sum of positive squares in only one way, i.e., 2062613056 + 80640400 = 45416^2 + 8980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66976655 + ... + 66976686.

Almost surely, 2^2143253456 is an apocalyptic number.

It is an amenable number.

2143253456 is a deficient number, since it is larger than the sum of its proper divisors (2009300146).

2143253456 is a wasteful number, since it uses less digits than its factorization.

2143253456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133953349 (or 133953343 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The square root of 2143253456 is about 46295.2854619129. The cubic root of 2143253456 is about 1289.3114639805.

Adding to 2143253456 its reverse (6543523412), we get a palindrome (8686776868).

The spelling of 2143253456 in words is "two billion, one hundred forty-three million, two hundred fifty-three thousand, four hundred fifty-six".