5665978047 has 4 divisors (see below), whose sum is σ = 7554637400. Its totient is φ = 3777318696.

The previous prime is 5665978027. The next prime is 5665978099. The reversal of 5665978047 is 7408795665.

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

It is a de Polignac number, because none of the positive numbers 2^k-5665978047 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 (5665978027) 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, 944329672 + ... + 944329677.

It is an arithmetic number, because the mean of its divisors is an integer number (1888659350).

Almost surely, 2^5665978047 is an apocalyptic number.

5665978047 is a deficient number, since it is larger than the sum of its proper divisors (1888659353).

5665978047 is a wasteful number, since it uses less digits than its factorization.

5665978047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888659352.

The product of its (nonzero) digits is 12700800, while the sum is 57.

The square root of 5665978047 is about 75272.6912432391. The cubic root of 5665978047 is about 1782.7548604412.

The spelling of 5665978047 in words is "five billion, six hundred sixty-five million, nine hundred seventy-eight thousand, forty-seven".