27097561000 has 64 divisors (see below), whose sum is σ = 63642908160. Its totient is φ = 10798920000.

The previous prime is 27097560949. The next prime is 27097561031. The reversal of 27097561000 is 16579072.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221005 + ... + 320995.

It is an arithmetic number, because the mean of its divisors is an integer number (994420440).

Almost surely, 2^27097561000 is an apocalyptic number.

27097561000 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 27097561000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31821454080).

27097561000 is an abundant number, since it is smaller than the sum of its proper divisors (36545347160).

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

27097561000 is a wasteful number, since it uses less digits than its factorization.

27097561000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100283 (or 100269 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The spelling of 27097561000 in words is "twenty-seven billion, ninety-seven million, five hundred sixty-one thousand".