27641608620 has 96 divisors (see below), whose sum is σ = 78482718720. Its totient is φ = 7267902720.

The previous prime is 27641608559. The next prime is 27641608639. The reversal of 27641608620 is 2680614672.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3887989 + ... + 3895091.

It is an arithmetic number, because the mean of its divisors is an integer number (817528320).

Almost surely, 2^27641608620 is an apocalyptic number.

27641608620 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 27641608620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39241359360).

27641608620 is an abundant number, since it is smaller than the sum of its proper divisors (50841110100).

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

27641608620 is a wasteful number, since it uses less digits than its factorization.

27641608620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8015 (or 8013 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 27641608620 in words is "twenty-seven billion, six hundred forty-one million, six hundred eight thousand, six hundred twenty".