27380913840 has 480 divisors, whose sum is σ = 111534736320. Its totient is φ = 6154444800.

The previous prime is 27380913839. The next prime is 27380913853. The reversal of 27380913840 is 4831908372.

It is a super-3 number, since 3×27380913840³ (a number of 32 digits) contains 333 as substring.

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, 6454120 + ... + 6458360.

It is an arithmetic number, because the mean of its divisors is an integer number (232364034).

Almost surely, 2^27380913840 is an apocalyptic number.

27380913840 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 27380913840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55767368160).

27380913840 is an abundant number, since it is smaller than the sum of its proper divisors (84153822480).

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

27380913840 is a wasteful number, since it uses less digits than its factorization.

27380913840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338 (or 4319 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 27380913840 in words is "twenty-seven billion, three hundred eighty million, nine hundred thirteen thousand, eight hundred forty".