6211997952 has 144 divisors (see below), whose sum is σ = 16989662592. Its totient is φ = 2014248960.

The previous prime is 6211997951. The next prime is 6211997989. The reversal of 6211997952 is 2597991126.

It is a junction number, because it is equal to n+sod(n) for n = 6211997895 and 6211997904.

It is not an unprimeable number, because it can be changed into a prime (6211997951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4543573 + ... + 4544939.

It is an arithmetic number, because the mean of its divisors is an integer number (117983768).

Almost surely, 2^6211997952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6211997952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8494831296).

6211997952 is an abundant number, since it is smaller than the sum of its proper divisors (10777664640).

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

6211997952 is a wasteful number, since it uses less digits than its factorization.

6211997952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544 (or 1530 counting only the distinct ones).

The product of its digits is 612360, while the sum is 51.

The square root of 6211997952 is about 78816.2289887051. The cubic root of 6211997952 is about 1838.2748038703.

The spelling of 6211997952 in words is "six billion, two hundred eleven million, nine hundred ninety-seven thousand, nine hundred fifty-two".