27026809920 has 672 divisors, whose sum is σ = 110769684480. Its totient is φ = 6203381760.

The previous prime is 27026809919. The next prime is 27026809937. The reversal of 27026809920 is 2990862072.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16251009 + ... + 16252671.

It is an arithmetic number, because the mean of its divisors is an integer number (164835840).

Almost surely, 2^27026809920 is an apocalyptic number.

27026809920 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 27026809920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55384842240).

27026809920 is an abundant number, since it is smaller than the sum of its proper divisors (83742874560).

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

27026809920 is a wasteful number, since it uses less digits than its factorization.

27026809920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 27026809920 in words is "twenty-seven billion, twenty-six million, eight hundred nine thousand, nine hundred twenty".