6111399888 has 160 divisors (see below), whose sum is σ = 19201806720. Its totient is φ = 1845642240.

The previous prime is 6111399869. The next prime is 6111399919. The reversal of 6111399888 is 8889931116.

6111399888 is a `hidden beast` number, since 611 + 13 + 9 + 9 + 8 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1504356 + ... + 1508412.

It is an arithmetic number, because the mean of its divisors is an integer number (120011292).

Almost surely, 2^6111399888 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 6111399888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9600903360).

6111399888 is an abundant number, since it is smaller than the sum of its proper divisors (13090406832).

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

6111399888 is a wasteful number, since it uses less digits than its factorization.

6111399888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402 (or 4390 counting only the distinct ones).

The product of its digits is 746496, while the sum is 54.

The square root of 6111399888 is about 78175.4429984250. The cubic root of 6111399888 is about 1828.2976482731.

The spelling of 6111399888 in words is "six billion, one hundred eleven million, three hundred ninety-nine thousand, eight hundred eighty-eight".