6211189440 has 168 divisors, whose sum is σ = 21683441520. Its totient is φ = 1631545344.

The previous prime is 6211189421. The next prime is 6211189441. The reversal of 6211189440 is 449811126.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6211189395 and 6211189404.

It is not an unprimeable number, because it can be changed into a prime (6211189441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176866 + ... + 209054.

Almost surely, 2^6211189440 is an apocalyptic number.

6211189440 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 6211189440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10841720760).

6211189440 is an abundant number, since it is smaller than the sum of its proper divisors (15472252080).

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

6211189440 is a wasteful number, since it uses less digits than its factorization.

6211189440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32279 (or 32266 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 6211189440 is about 78811.0997258635. The cubic root of 6211189440 is about 1838.1950479026.

The spelling of 6211189440 in words is "six billion, two hundred eleven million, one hundred eighty-nine thousand, four hundred forty".