27381435620 has 96 divisors (see below), whose sum is σ = 72495440640. Its totient is φ = 8438538240.

The previous prime is 27381435583. The next prime is 27381435671. The reversal of 27381435620 is 2653418372.

It is a super-2 number, since 2×27381435620² (a number of 22 digits) contains 22 as substring.

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, 37172 + ... + 236948.

It is an arithmetic number, because the mean of its divisors is an integer number (755160840).

Almost surely, 2^27381435620 is an apocalyptic number.

27381435620 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 27381435620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36247720320).

27381435620 is an abundant number, since it is smaller than the sum of its proper divisors (45114005020).

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

27381435620 is a wasteful number, since it uses less digits than its factorization.

27381435620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199893 (or 199891 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 27381435620 in words is "twenty-seven billion, three hundred eighty-one million, four hundred thirty-five thousand, six hundred twenty".