7870872543 has 4 divisors (see below), whose sum is σ = 10494496728. Its totient is φ = 5247248360.

The previous prime is 7870872497. The next prime is 7870872553. The reversal of 7870872543 is 3452780787.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7870872543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7870872553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1311812088 + ... + 1311812093.

It is an arithmetic number, because the mean of its divisors is an integer number (2623624182).

Almost surely, 2^7870872543 is an apocalyptic number.

7870872543 is a deficient number, since it is larger than the sum of its proper divisors (2623624185).

7870872543 is a wasteful number, since it uses less digits than its factorization.

7870872543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623624184.

The product of its (nonzero) digits is 2634240, while the sum is 51.

The square root of 7870872543 is about 88717.9381128755. The cubic root of 7870872543 is about 1989.1809582837.

The spelling of 7870872543 in words is "seven billion, eight hundred seventy million, eight hundred seventy-two thousand, five hundred forty-three".