5178247646 has 32 divisors (see below), whose sum is σ = 9522067968. Its totient is φ = 2078223840.

The previous prime is 5178247621. The next prime is 5178247649. The reversal of 5178247646 is 6467428715.

It is a junction number, because it is equal to n+sod(n) for n = 5178247594 and 5178247603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5178247649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387026 + ... + 400181.

It is an arithmetic number, because the mean of its divisors is an integer number (297564624).

Almost surely, 2^5178247646 is an apocalyptic number.

5178247646 is a deficient number, since it is larger than the sum of its proper divisors (4343820322).

5178247646 is a wasteful number, since it uses less digits than its factorization.

5178247646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787256.

The product of its digits is 2257920, while the sum is 50.

The square root of 5178247646 is about 71960.0420094374. The cubic root of 5178247646 is about 1730.0590985191.

The spelling of 5178247646 in words is "five billion, one hundred seventy-eight million, two hundred forty-seven thousand, six hundred forty-six".