6501450857850 has 288 divisors, whose sum is σ = 19337645321904. Its totient is φ = 1555623014400.

The previous prime is 6501450857849. The next prime is 6501450857921. The reversal of 6501450857850 is 587580541056.

6501450857850 is a `hidden beast` number, since 6 + 5 + 0 + 1 + 4 + 508 + 57 + 85 + 0 = 666.

It can be written as a sum of positive squares in 24 ways, for example, as 1597010985441 + 4904439872409 = 1263729^2 + 2214597^2 .

It is a super-3 number, since 3×6501450857850³ (a number of 39 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 236566110 + ... + 236593590.

Almost surely, 2^{6501450857850} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6501450857850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9668822660952).

6501450857850 is an abundant number, since it is smaller than the sum of its proper divisors (12836194464054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6501450857850 is a wasteful number, since it uses less digits than its factorization.

6501450857850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28642 (or 28634 counting only the distinct ones).

The product of its (nonzero) digits is 6720000, while the sum is 54.

The spelling of 6501450857850 in words is "six trillion, five hundred one billion, four hundred fifty million, eight hundred fifty-seven thousand, eight hundred fifty".