7715828047 has 4 divisors (see below), whose sum is σ = 8121924280. Its totient is φ = 7309731816.

The previous prime is 7715827997. The next prime is 7715828051. The reversal of 7715828047 is 7408285177.

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-7715828047 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 (7715828077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203048088 + ... + 203048125.

It is an arithmetic number, because the mean of its divisors is an integer number (2030481070).

Almost surely, 2^7715828047 is an apocalyptic number.

7715828047 is a deficient number, since it is larger than the sum of its proper divisors (406096233).

7715828047 is a wasteful number, since it uses less digits than its factorization.

7715828047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406096232.

The product of its (nonzero) digits is 878080, while the sum is 49.

The square root of 7715828047 is about 87839.7862417709. The cubic root of 7715828047 is about 1976.0329412265.

The spelling of 7715828047 in words is "seven billion, seven hundred fifteen million, eight hundred twenty-eight thousand, forty-seven".