27845836187500 has 84 divisors (see below), whose sum is σ = 60921175042728. Its totient is φ = 11136654400000.

The previous prime is 27845836187437. The next prime is 27845836187501. The reversal of 27845836187500 is 578163854872.

It is not an unprimeable number, because it can be changed into a prime (27845836187501) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 466032627 + ... + 466092373.

It is an arithmetic number, because the mean of its divisors is an integer number (725252083842).

Almost surely, 2^{27845836187500} is an apocalyptic number.

27845836187500 is a gapful number since it is divisible by the number (20) 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 27845836187500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30460587521364).

27845836187500 is an abundant number, since it is smaller than the sum of its proper divisors (33075338855228).

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

27845836187500 is an frugal number, since it uses more digits than its factorization.

27845836187500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67238 (or 67211 counting only the distinct ones).

The product of its (nonzero) digits is 90316800, while the sum is 64.

The spelling of 27845836187500 in words is "twenty-seven trillion, eight hundred forty-five billion, eight hundred thirty-six million, one hundred eighty-seven thousand, five hundred".