6485149020 has 288 divisors, whose sum is σ = 21741350400. Its totient is φ = 1443826944.

The previous prime is 6485149019. The next prime is 6485149049. The reversal of 6485149020 is 209415846.

It is a self number, because there is not a number n which added to its sum of digits gives 6485149020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59496726 + ... + 59496834.

It is an arithmetic number, because the mean of its divisors is an integer number (75490800).

Almost surely, 2^6485149020 is an apocalyptic number.

6485149020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6485149020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10870675200).

6485149020 is an abundant number, since it is smaller than the sum of its proper divisors (15256201380).

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

6485149020 is a wasteful number, since it uses less digits than its factorization.

6485149020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 6485149020 is about 80530.4229468590. The cubic root of 6485149020 is about 1864.8331753786.

The spelling of 6485149020 in words is "six billion, four hundred eighty-five million, one hundred forty-nine thousand, twenty".