6404020048 has 10 divisors (see below), whose sum is σ = 12407788874. Its totient is φ = 3202010016.

The previous prime is 6404020031. The next prime is 6404020069. The reversal of 6404020048 is 8400204046.

It can be written as a sum of positive squares in only one way, i.e., 6385288464 + 18731584 = 79908^2 + 4328^2 .

It is a super-2 number, since 2×6404020048² = 82022945550371844608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6404019998 and 6404020025.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 200125611 + ... + 200125642.

Almost surely, 2^6404020048 is an apocalyptic number.

It is an amenable number.

6404020048 is a deficient number, since it is larger than the sum of its proper divisors (6003768826).

6404020048 is a wasteful number, since it uses less digits than its factorization.

6404020048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400251261 (or 400251255 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 6404020048 is about 80025.1213557343. The cubic root of 6404020048 is about 1857.0241897870.

The spelling of 6404020048 in words is "six billion, four hundred four million, twenty thousand, forty-eight".