2009842775528 has 64 divisors (see below), whose sum is σ = 4536369446400. Its totient is φ = 815506280640.

The previous prime is 2009842775527. The next prime is 2009842775533. The reversal of 2009842775528 is 8255772489002.

It is not an unprimeable number, because it can be changed into a prime (2009842775527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1070351 + ... + 2272737.

It is an arithmetic number, because the mean of its divisors is an integer number (70880772600).

Almost surely, 2^{2009842775528} is an apocalyptic number.

2009842775528 is a gapful number since it is divisible by the number (28) 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 2009842775528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2268184723200).

2009842775528 is an abundant number, since it is smaller than the sum of its proper divisors (2526526670872).

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

2009842775528 is a wasteful number, since it uses less digits than its factorization.

2009842775528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203990 (or 1203986 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 59.

The spelling of 2009842775528 in words is "two trillion, nine billion, eight hundred forty-two million, seven hundred seventy-five thousand, five hundred twenty-eight".