5128687783 has 4 divisors (see below), whose sum is σ = 5128994520. Its totient is φ = 5128381048.

The previous prime is 5128687741. The next prime is 5128687807. The reversal of 5128687783 is 3877868215.

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-5128687783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5128687703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126748 + ... + 162241.

It is an arithmetic number, because the mean of its divisors is an integer number (1282248630).

Almost surely, 2^5128687783 is an apocalyptic number.

5128687783 is a deficient number, since it is larger than the sum of its proper divisors (306737).

5128687783 is a wasteful number, since it uses less digits than its factorization.

5128687783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306736.

The product of its digits is 4515840, while the sum is 55.

The square root of 5128687783 is about 71614.8572783609. The cubic root of 5128687783 is about 1724.5220585024.

The spelling of 5128687783 in words is "five billion, one hundred twenty-eight million, six hundred eighty-seven thousand, seven hundred eighty-three".