2143455515 has 8 divisors (see below), whose sum is σ = 2614313328. Its totient is φ = 1686653280.

The previous prime is 2143455469. The next prime is 2143455553. The reversal of 2143455515 is 5155543412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2143455515 - 2⁶ = 2143455451 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 3513557 + ... + 3514166.

It is an arithmetic number, because the mean of its divisors is an integer number (326789166).

Almost surely, 2^2143455515 is an apocalyptic number.

2143455515 is a deficient number, since it is larger than the sum of its proper divisors (470857813).

2143455515 is an equidigital number, since it uses as much as digits as its factorization.

2143455515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027789.

The product of its digits is 60000, while the sum is 35.

The square root of 2143455515 is about 46297.4676953287. The cubic root of 2143455515 is about 1289.3519800781.

Adding to 2143455515 its reverse (5155543412), we get a palindrome (7298998927).

The spelling of 2143455515 in words is "two billion, one hundred forty-three million, four hundred fifty-five thousand, five hundred fifteen".