27135966858 has 512 divisors, whose sum is σ = 82059264000. Its totient is φ = 5867769600.

The previous prime is 27135966857. The next prime is 27135966919. The reversal of 27135966858 is 85866953172.

It is not an unprimeable number, because it can be changed into a prime (27135966857) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 128606373 + ... + 128606583.

It is an arithmetic number, because the mean of its divisors is an integer number (160272000).

Almost surely, 2^27135966858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27135966858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41029632000).

27135966858 is an abundant number, since it is smaller than the sum of its proper divisors (54923297142).

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

27135966858 is a wasteful number, since it uses less digits than its factorization.

27135966858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 289 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 60.

The spelling of 27135966858 in words is "twenty-seven billion, one hundred thirty-five million, nine hundred sixty-six thousand, eight hundred fifty-eight".