6140643210 has 160 divisors (see below), whose sum is σ = 18263366352. Its totient is φ = 1470597120.

The previous prime is 6140643191. The next prime is 6140643211. The reversal of 6140643210 is 123460416.

6140643210 is a `hidden beast` number, since 6 + 1 + 4 + 0 + 643 + 2 + 10 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3252763089 + 2887880121 = 57033^2 + 53739^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6140643211) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 381730 + ... + 397490.

Almost surely, 2^6140643210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6140643210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9131683176).

6140643210 is an abundant number, since it is smaller than the sum of its proper divisors (12122723142).

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

6140643210 is a wasteful number, since it uses less digits than its factorization.

6140643210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15830 (or 15821 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6140643210 is about 78362.2562845149. The cubic root of 6140643210 is about 1831.2091713029.

The spelling of 6140643210 in words is "six billion, one hundred forty million, six hundred forty-three thousand, two hundred ten".