27072811998 has 96 divisors (see below), whose sum is σ = 62461027200. Its totient is φ = 8450568000.

The previous prime is 27072811951. The next prime is 27072811999. The reversal of 27072811998 is 89911827072.

27072811998 is a `hidden beast` number, since 270 + 7 + 281 + 1 + 9 + 98 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27072811999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25758573 + ... + 25759623.

It is an arithmetic number, because the mean of its divisors is an integer number (650635700).

Almost surely, 2^27072811998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27072811998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31230513600).

27072811998 is an abundant number, since it is smaller than the sum of its proper divisors (35388215202).

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

27072811998 is a wasteful number, since it uses less digits than its factorization.

27072811998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878 (or 1875 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The spelling of 27072811998 in words is "twenty-seven billion, seventy-two million, eight hundred eleven thousand, nine hundred ninety-eight".