6440658050 has 48 divisors (see below), whose sum is σ = 12235098600. Its totient is φ = 2521559040.

The previous prime is 6440658041. The next prime is 6440658101. The reversal of 6440658050 is 508560446.

It can be written as a sum of positive squares in 12 ways, for example, as 462121009 + 5978537041 = 21497^2 + 77321^2 .

It is a super-2 number, since 2×6440658050² = 82964152234059605000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6440657995 and 6440658013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1187144 + ... + 1192556.

Almost surely, 2^6440658050 is an apocalyptic number.

6440658050 is a deficient number, since it is larger than the sum of its proper divisors (5794440550).

6440658050 is a wasteful number, since it uses less digits than its factorization.

6440658050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5927 (or 5922 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 6440658050 is about 80253.7105061193. The cubic root of 6440658050 is about 1860.5588610483.

The spelling of 6440658050 in words is "six billion, four hundred forty million, six hundred fifty-eight thousand, fifty".