27109018080 has 144 divisors (see below), whose sum is σ = 96531795360. Its totient is φ = 6914755584.

The previous prime is 27109018009. The next prime is 27109018081. The reversal of 27109018080 is 8081090172.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×27109018080² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27109018081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376135 + ... + 442374.

It is an arithmetic number, because the mean of its divisors is an integer number (670359690).

Almost surely, 2^27109018080 is an apocalyptic number.

27109018080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27109018080 is an abundant number, since it is smaller than the sum of its proper divisors (69422777280).

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

27109018080 is a wasteful number, since it uses less digits than its factorization.

27109018080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818553 (or 818542 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 27109018080 in words is "twenty-seven billion, one hundred nine million, eighteen thousand, eighty".