28166741064 has 960 divisors, whose sum is σ = 108608438400. Its totient is φ = 6651279360.

The previous prime is 28166741041. The next prime is 28166741077. The reversal of 28166741064 is 46014766182.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 385845732 + ... + 385845804.

It is an arithmetic number, because the mean of its divisors is an integer number (113133790).

Almost surely, 2^28166741064 is an apocalyptic number.

28166741064 is a gapful number since it is divisible by the number (24) 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 28166741064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54304219200).

28166741064 is an abundant number, since it is smaller than the sum of its proper divisors (80441697336).

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

28166741064 is a wasteful number, since it uses less digits than its factorization.

28166741064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 28166741064 in words is "twenty-eight billion, one hundred sixty-six million, seven hundred forty-one thousand, sixty-four".