6191101664 has 192 divisors, whose sum is σ = 14561648640. Its totient is φ = 2560481280.

The previous prime is 6191101661. The next prime is 6191101669. The reversal of 6191101664 is 4661011916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6191101661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31426814 + ... + 31427010.

It is an arithmetic number, because the mean of its divisors is an integer number (75841920).

Almost surely, 2^6191101664 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 6191101664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7280824320).

6191101664 is an abundant number, since it is smaller than the sum of its proper divisors (8370546976).

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

6191101664 is a wasteful number, since it uses less digits than its factorization.

6191101664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 6191101664 is about 78683.5539614220. The cubic root of 6191101664 is about 1836.2112556201.

The spelling of 6191101664 in words is "six billion, one hundred ninety-one million, one hundred one thousand, six hundred sixty-four".